Interesting thing I like to keep in mind is that these blood types as commonly shown are horribly simplified. There are actually dozens of antigens with ABO representing the most important, even the ABO system is a bit more complicated with sub categories of A types etc, but the Rhesus system is on another level containing dozens of independent antigens. The + or - you see is short hand for the status of Rh D in particular. and there is a whole lot more: Hh, K, MNS, etc. The effects of mismatches can vary a great deal depending on the antigen and population E.g. H deficiency is particularly prevalent in India, and potentially lethal if ignored. This is a very important part of why its so tricky to modify or produce blood ourselves. Also, you can test a great deal about why we have blood types. E.g. you have things like Malaria which gets a hold on A type but not so easily on O type. Given the scale of death caused by malaria, even a small shift in its ability to infect someone would be a major evolutionary pressure, and with the right knowledge about this that evolutionary pressure could be quantified. (Thats only one of a number of other ailments tied to blood type.)
So the blood donation service will stop nagging me about donating my sweet O neg blood. Even though I book the next appointment for as soon as I'm allowed to donate.
We are so few and between, of us. I know why they do what they do. I am stingy with mine. Thank you for donating. I am a nurse. They will exploit you if you let them.
@@AbleBodied in the UK men are only allowed to donate every 12 weeks (16 for women) so that's when I donate. I'm on 73 donations and hoping to hit a 100 before I'm finished.
There are so so many more blood type systems to explore beyond ABO. Immunohematology is a field that is grossly misunderstood even within medicine. Blood bank guy here on youtube has some awesome videos on it!
Well, what blood type does your post man have? Just Kidding. Its not weird, its possible. What was only indirectly mentioned in the video is the recessivity of 0 type. If you get A and 0 from your parents you are blood type A. This follows to this A+0=A, A+A=A, B+0=B, B+B=B A+B=AB. Meaning your father received A and 0 from his parents, your mother B and 0. Because of 0's recessivity their blood types are called A and B But they still can pass the 0 on to the next generation (you and your sister) She received A from your Father and B from your mother You received 0 from both. I hope that understandable
@@ChiragMalik4 Very easy. Punnet square. Your dad is A singular, your mother is B singular. Meaning 25% chance of O, 25% chance of B, 25% chance of A, and 25% chance of AB
How are they useless, they are the universal donor and may be the most important blood type when it comes to blood transfusions? Edit: Yeah I get it now.
@@woundedidiot429 They talk about the ability to create type O blood from any type of blood in the video which would effectively make type O individuals "useless".
It would have been useful if he had pointed out that all great apes have basically the same blood types so obviously they evolved quite a long time ago and before humans.
But will those enzymes effect the +/- part of the blood? Because as far as I understand it, O- is universal and can be used on anyone, but O+ is the most common and can only be used on people with O blood. Great video though, very interesting information.
The + and - are separate unto there own, + is dominant while - is recessive. The negative means they have no antigens present, which means anybody can use them because they have nothing that the phagocytes would want. While the + has antigens that will be seen as an intruder to anyone other than O+. I hope this clarified a little bit.
As a med tech, this sounds like a bad idea to me. Evolutionarily speaking, genetic diversity is literally the driving force behind life itself. You said earlier in the video that one possible theory for the existence of multiple blood types was as an immunological response against disease. Which makes perfect sense. That's how evolution works. When the individuals of a population have diverse qualities, it betters the chances of the survival of the species as a whole. So reducing the number of blood types down to just one could be like taking an evolutionary step backwards and present a gigantic risk for the entire human race. I think synthetically produced blood products are a better option.
No one’s talking about changing people’s blood type, which may not be possible and may be catastrophic for the individual, let alone the species. This video describes transforming units of blood after donation to cleanse them of factors that make them unsuitable to some potential recipients. A recipient’s marrow would continue generating its native blood type unchanged, and received units of blood would quickly be colonised through circulation alongside the body’s endogenous supply.
Instead of changing blood group can we program our immune system to not to think any blood type as harmful , then theoretically there would be no death in any blood transfusion , unless other parts of body react differently to other blood group ?!
I was surprised to see a different presenter but Mr. Kelly did a super job; I had forgotten a lot of my "blood knowledge," but he explained it clearly in this video, and I appreciate the overall topic of converting different blood types to universal Type O. Great work! :-D
Why those with animal blood transfusions survived, or rather why they didn't die should be of considerable interest. These animals weren't even primates. Our common ancestor might be tens of millions of years ago.
The figure at 6:35 is incorrect. The video mentioned mixing the enzyme with donated blood, but the figure showed you mixing the lab bacteria with blood. Normally the enzyme is harvested and purified from the bacteria. I bet a lot of the audience would think that from the figure, “transformed” blood would have bacteria contamination.
Actually, all that is needed for evolutionary variation is for no specimen to have a clear advantage. It is NOT necessary for variation to be an advantage.
Howdy. Great. The clip actually attempts to answer the why. My theory is that the genes responsible for coding the blood cell proteins mutated somewhere along the history. The mutations were neither beneficial or unbeneficial so the evolution mechanisms did not select any variant out. They all just hiked along. Regards.
I thought being AB was cool, but now you're telling me that my blood cells decided to be lazy and not fight back invasion from other blood groups? You're telling me my blood will let itself be colonised? 😤 (JK, I love being AB😂... My love for it is tied more to how rare it is, not really for the ease of transfusion, although that's a huge plus).
The very best is O-negative, none of the sugars that could set off an immune response. But natural O-negative is only a fraction of 1% of the population.
If I am O-type, why would I have antibodies against A and B if my immune system has never been introduced to A or B blood types? Which means I should be able to receive either.
@@alfreddoncarlo9004 They did. It was about the Solar orbiter satellite. They had a minor gaff in it though when the presenter missed the word "million" when talking about average distance to the sun so you can guess what the comments section was like when they said the sun was 150km away 😂
The evolution of blood types is not a hypothesis but fact as you contradict yourself by going on to talk about blood types being passed on by your parents.
I wish videos that have the word why in the title would have the word because in the context. We have blood types because...Nothing wrong with his explanations just not the answer to the question he is posting.
4:00 My blood type is O+ and I think both my parents are A+. And I know they are my parents because various other markers match and still I happen to have different blood type than both of them.
Interesting piece, but a bit simplistic. If you are just giving some one a type match ABO Rh -/+ are quick an easy. However that’s not the ideal. The ideal is a Type and Match. This be a cause there are 36 agreed upon Blood Group Systems and 2 more awaiting inclusion. There are also a total of 36 variables in each Humans blood typing to match and over 346 Red Blood Cell Antigens. To make things even more complicated, some of the genetic material that is expressed in Blood Type and Match are Mosaic. Meaning they can express different aspects of each parent’s alleles. This is why when a patient’s blood is drawn for any possible transfusion, they are given a unique, Blood Bank ID band. In this way there are double checks when blood leaves the lab, when blood arrives at the nurses station and again when the blood is hung. Usually only one Med Tech will work the Blood Bank for their entire shift. Incidentally, we already a fluid that mimics the composition of blood, minus cells. Generally when a patient is receiving fluids, they are receiving Normal Saline (0.0% Sodium Chloride). This is fine, but not ideal. Normal Saline has a nasty habit of raising a person’s K level, which in many cases can be contraindicated. In addition NS is slightly basic, while blood is slightly acidic. Acid + Base = Salts and H2O. This can mean RIDONKULOUS water retention. I had 2 surgeries go sideways 40 hours apart. When I woke up 4 days later, I looked like the Stayed Puffed Marshmallow Man. Lactated Ringers, on the other hand, closely mimic the chemistry of blood and is slightly acidic. I does not cause K spike, nor does it cause immense swelling, because, minus the cells, it mimics the chemical composition of our blood very closely. There are therefore fewer chances of side effects. Though if over used, it too can lead to edema. It is also contraindicated for patients who have Cirrhosis, Congestive Heart Failure, Hypoalbuminemia and Chronic Kidney Disease. It might just be me, though I am a statistical outlier, but if your going to discuss blood types, tell the whole story. 🥺🥺🥺
Either you completely forgot to talk about the complications that may result from the interaction between donor's plasma and recipient's antigen or just ignored it to avoid making the video too complicated.
Pancreas in a nice, creamy white wine sauce, with a side order of desert truffle almondine, finished with the most _to die for_ Sachertorte. What? Zombies can't be erudite, cultured gourmands? That's racist, vitalist, and all manner of offensive -ists, good person. We're not *all* braindead, slavering, flesh-maws, you know.
Made an entire video with a terrible summery of how blood works just to give people the answer "We don't know" to answer the video title... How disgusting the click bating has become on youtube.
I disagree with the number of things you said. Namely I don't believe Rh negative blood has been around that long. And while I have no proof to support my opinion, you have no proof to support yours either.
The title is a bit misleading. You hardly talk about WHY we have bloodtypes and instead spend most of the video about what bloodtypes are. I knew that already. The bit about trying to make all blood into O blood is interesting, but also not covered by the title....
2:52 - 3:19 was the only segment that addressed the question: "Why Do We Have Blood Types?" 27 seconds, or 6% of the video. The answer was: "First off we don't know why..." Waste of time.
Hey Seekers, thanks for watching! Want more on what makes blood...blood? Check out this video: ruclips.net/video/j2-BGTmuZjU/видео.html
do animals have blood types also?
I'm Rh negative.
Please do a video on Rh negative blood.
Does blood transfusion from young to old have any health benefits ?
Do animals have different blood types?
@@williamlindsey5737 we are animals
Interesting thing I like to keep in mind is that these blood types as commonly shown are horribly simplified. There are actually dozens of antigens with ABO representing the most important, even the ABO system is a bit more complicated with sub categories of A types etc, but the Rhesus system is on another level containing dozens of independent antigens. The + or - you see is short hand for the status of Rh D in particular.
and there is a whole lot more: Hh, K, MNS, etc. The effects of mismatches can vary a great deal depending on the antigen and population E.g. H deficiency is particularly prevalent in India, and potentially lethal if ignored.
This is a very important part of why its so tricky to modify or produce blood ourselves.
Also, you can test a great deal about why we have blood types. E.g. you have things like Malaria which gets a hold on A type but not so easily on O type. Given the scale of death caused by malaria, even a small shift in its ability to infect someone would be a major evolutionary pressure, and with the right knowledge about this that evolutionary pressure could be quantified. (Thats only one of a number of other ailments tied to blood type.)
Lol I feel like you taught me more in 1 comment than that 7 min video
Um..I think you should've been doing this video. 8^D I never knew blood was this complex, I suppose it should surprise me, the body is SO complex.
+
Yup, SciShow did an episode on this last year: ruclips.net/video/OGeHG_DbCdE/видео.html
Thanks Bob
So the blood donation service will stop nagging me about donating my sweet O neg blood. Even though I book the next appointment for as soon as I'm allowed to donate.
We are so few and between, of us.
I know why they do what they do.
I am stingy with mine.
Thank you for donating.
I am a nurse.
They will exploit you if you let them.
@@AbleBodied in the UK men are only allowed to donate every 12 weeks (16 for women) so that's when I donate. I'm on 73 donations and hoping to hit a 100 before I'm finished.
@@DogsBAwesome you are very cool 🤩
@@DogsBAwesome Thank you and God bless you, for your help.
From Louisiana nurse.
They want you to donate your blood but yet they’re not gonna donate it back if you need it. That’s for damn sure.
My blood is perfect. You could even give it an A+
BloodType O is best against Covid-19 apparently.
So getting a big fat O is more attractive right now.
Ravneet Singh Plaha sorry that’s a failing grade. My schools never even went below E. Getting an O+ is loser talk
If the blood type becomes a grade
Me who has AB : *Visible Confusion*
Mine is awesome with 2 pluses 😁ab+
I’m Ol-x
There are so so many more blood type systems to explore beyond ABO. Immunohematology is a field that is grossly misunderstood even within medicine. Blood bank guy here on youtube has some awesome videos on it!
I'm so happy how science is advancing and how our understanding is getting even more deep
My mom, her mom, my sister is B.
My dad and his parents are A.
I'm O. Do you think I'm adopted??
What you came for starts at 4:30
keep up the good work mate!
Thank godness
Thanks
Thank you!!
Thank you!
People always ask why I'm always happy at work, I tell them it's in my blood to just B+
thanks guys. I was confused before seeing this video. but now, I'm way more confused.
Nothing about RH incompatibility between mothers and fetuses?maybe would be a entire episode only about that.
Aww, the Punnet Square. Memories pours in again. So nostalgic.
I took a blood test and got A+
My parents are so proud of me.
Where my O- brothers and sisters at ..
O- ! =^.^=
Lycan Thorpe. I feed on the flesh of 0-
@@thelastwitcher5396 good source of protein
O+ (I) *sulks away
AB+ here... *sips cocktail*... Keep up the good work guys.
For real though, those of you who devote yourselves to donate are big heroes ❤️
I give this video an A+
Y'know, at first, I thought about giving ur joke a B.
But I wanted to be neutral so n-O
Genetic? My father have A my mother have B my sister AB and I have O
It's really weird..
One of your parents was cheating or you're adopted?
Explain that atheist!
Well, what blood type does your post man have?
Just Kidding. Its not weird, its possible. What was only indirectly mentioned in the video is the recessivity of 0 type. If you get A and 0 from your parents you are blood type A. This follows to this A+0=A, A+A=A, B+0=B, B+B=B A+B=AB.
Meaning your father received A and 0 from his parents, your mother B and 0. Because of 0's recessivity their blood types are called A and B
But they still can pass the 0 on to the next generation (you and your sister)
She received A from your Father and B from your mother
You received 0 from both.
I hope that understandable
@@ChiragMalik4 Very easy. Punnet square. Your dad is A singular, your mother is B singular. Meaning 25% chance of O, 25% chance of B, 25% chance of A, and 25% chance of AB
@@andreyrumming6842 I was kidding man. I know it.
And thus, the mutants were created .
Beware of my optic blast, Magneto!
I was just watching Days of the future past
We're all technically mutants?
Check this out
Rh blood type in humans.. Mutant Gene, connected to rabbit genes..
person with O-
_I have never felt more useless in my life_
LMAO.. right, they tryna make us irrelevant
How are they useless, they are the universal donor and may be the most important blood type when it comes to blood transfusions?
Edit: Yeah I get it now.
@@yeahkeen2905 too late to save face 🙃
@@yeahkeen2905 I didnt get it
@@woundedidiot429 They talk about the ability to create type O blood from any type of blood in the video which would effectively make type O individuals "useless".
Another video with something cool promised in the future that will be forgotten forever in a year.
Very interesting and informative, thank you for providing historical background!
But imagine being a horse. They have 7 blood types. A, C, D, K, P, Q, and U. With over 30 different factors or antigenic sites. Complicated or what?
I told the paramedics the wrong blood type for my ex
Now she'll know what rejection feels like
My blood didn’t need any turn because I’m universal donor (O-)
I donate three times each 2 units which is (400ml/each donation)
😍😍😍
Teacher : why humans have different blood groups ?👺
Student : So mosquitoes can suck different flavours😂😂😂
Teacher :😵😨😠
The type of blood tells us which type of antigens and antibodies in our bodies. I like this video because it's way more recent and modern.
Start from 4:25 if you wanna save time.
Damn, their devaluing my blood. I can't monetize this :(
Those bastards! Get 'em!
It would have been useful if he had pointed out that all great apes have basically the same blood types so obviously they evolved quite a long time ago and before humans.
But will those enzymes effect the +/- part of the blood? Because as far as I understand it, O- is universal and can be used on anyone, but O+ is the most common and can only be used on people with O blood. Great video though, very interesting information.
I think you meant to say AB+.
@@Destroyer9747 where did I mean to say that?
The + and - are separate unto there own, + is dominant while - is recessive. The negative means they have no antigens present, which means anybody can use them because they have nothing that the phagocytes would want. While the + has antigens that will be seen as an intruder to anyone other than O+. I hope this clarified a little bit.
@@tylerw8564 oh okay, that makes sense. Thank you for the information!!
As O+ you can donate to anyone with RH+. So you can donate to A+, B+, AB+ and O+, but not to any RH- blood types.
4:59 Zoinks! Shaggy looks like it has digital glasses.
VR googles....
I didn't know Illmango was a scientist. Makes sence.
Is he really ilmango or are you making a joke about the accent?
@@thesexydevil780 Just a Joke. But I would not be surprised.
As a med tech, this sounds like a bad idea to me. Evolutionarily speaking, genetic diversity is literally the driving force behind life itself. You said earlier in the video that one possible theory for the existence of multiple blood types was as an immunological response against disease. Which makes perfect sense. That's how evolution works. When the individuals of a population have diverse qualities, it betters the chances of the survival of the species as a whole. So reducing the number of blood types down to just one could be like taking an evolutionary step backwards and present a gigantic risk for the entire human race. I think synthetically produced blood products are a better option.
No one’s talking about changing people’s blood type, which may not be possible and may be catastrophic for the individual, let alone the species. This video describes transforming units of blood after donation to cleanse them of factors that make them unsuitable to some potential recipients. A recipient’s marrow would continue generating its native blood type unchanged, and received units of blood would quickly be colonised through circulation alongside the body’s endogenous supply.
Why do we have different blood types? The answer is “we don’t know.” 🤣🤣🤣 Thanks for wasting my time.
I’m O-, universal blood type, I can save the world but I can only save myself 😢
Not all hero’s wear capes #Onegative
I'm AB+, the universal receiver, the complete opposite lol
what is one gative?.....loljk
That is only for Red Blood cells.
When it comes to White Blood cells, the universal donor is AB+.
Be positive
You forgot the RF blood type
RF? WTF? First time I'm hearing of it. Tell me about it. Raise Awarness.
@@Gfish17 Rarest type of blood in the world, look it up, theres plenty of yt vids, i think theres like 50 or so ppl that have it
Oh, right. The fae people's blood type. Only other fae can be a donor.
Instead of changing blood group can we program our immune system to not to think any blood type as harmful , then theoretically there would be no death in any blood transfusion , unless other parts of body react differently to other blood group ?!
But then how would it know which antigen of blood that entered is not a virus antigen?
Everyone knows blood type is fluid and exists on a spectrum.
I was surprised to see a different presenter but Mr. Kelly did a super job; I had forgotten a lot of my "blood knowledge," but he explained it clearly in this video, and I appreciate the overall topic of converting different blood types to universal Type O. Great work! :-D
Why those with animal blood transfusions survived, or rather why they didn't die should be of considerable interest. These animals weren't even primates. Our common ancestor might be tens of millions of years ago.
What about other rare blood types?
Thank you Patrick
The figure at 6:35 is incorrect. The video mentioned mixing the enzyme with donated blood, but the figure showed you mixing the lab bacteria with blood.
Normally the enzyme is harvested and purified from the bacteria. I bet a lot of the audience would think that from the figure, “transformed” blood would have bacteria contamination.
Actually, all that is needed for evolutionary variation is for no specimen to have a clear advantage. It is NOT necessary for variation to be an advantage.
1:56 not really.. there is a fifth type that is very rare (considered a mutation)
I think it was called H or HR type
I think it's called bombay blood, or maybe RH-null (I don't know whether they are the same thing...)
We don't know how long ago it was. It could be as adaptation to different regions or circumstances like ice age, change diet from plants to meat etc.
You didn't answer the question, you just explained how the blood works which we already know.
Humans : Became O blood type*
Mosquitoes: nice now i cant get picky
AB+ here. I do quite well out of all this - I can have anyone's blood 😁
Interesting. Thank you
Seems like a thing we inherited by interbreeding with different species of human
Howdy. Great.
The clip actually attempts to answer the why.
My theory is that the genes responsible for coding the blood cell proteins mutated somewhere along the history. The mutations were neither beneficial or unbeneficial so the evolution mechanisms did not select any variant out. They all just hiked along.
Regards.
I thought being AB was cool, but now you're telling me that my blood cells decided to be lazy and not fight back invasion from other blood groups? You're telling me my blood will let itself be colonised? 😤 (JK, I love being AB😂... My love for it is tied more to how rare it is, not really for the ease of transfusion, although that's a huge plus).
your blood type is submissive to other types
@@thedukeoflegends1981 Let's call it a peace maker 😄
Great video.. Thanks
*Is this guy a vampire or how come he know so much about blood?*
He's a mosquito in disguise
I learned today that there is a P blood type.
Which is what led me to this video today.
Less than 1 in 1 million people are likely to have it.
Great topic!
No idea what my blood type is. That's probably a bad thing.
How long did you watch it to see if it reverted like the elements do when created?
It's almost as if you're trying to say something
Very informative
Can O+ be donated to a -ve blood type ?
The very best is O-negative, none of the sugars that could set off an immune response. But natural O-negative is only a fraction of 1% of the population.
Yes. But only once. After that it'll set off an immune response.
Love the 80s 90s theme
If I am O-type, why would I have antibodies against A and B if my immune system has never been introduced to A or B blood types? Which means I should be able to receive either.
Is the third type really type O? As far as I know it's type zero.
"Why Do We Have Blood Types?
"
- "We don't know"
Such a clickbait 😡
You earned a subscriber
I wrong or you only develop the antibody after you are exposed to a different type of blood antigen?
Like RH in Hemolytic disease of the newborn?
What happened to yesterday's video? The comments section was hilarious 😂
They didn't have a video yesterday.
@@alfreddoncarlo9004 They did. It was about the Solar orbiter satellite. They had a minor gaff in it though when the presenter missed the word "million" when talking about average distance to the sun so you can guess what the comments section was like when they said the sun was 150km away 😂
The evolution of blood types is not a hypothesis but fact as you contradict yourself by going on to talk about blood types being passed on by your parents.
Do dogs, cats and other animals have this blood types system also?
I want a video on our nervous system
I'm amused that Peter (the blood researcher) consciously or coincidentally looks like Morbius, the living vampire, from Marvel comics. 👍🤔
Never actually answered the click bait question eh?
The answer to the video title "Why Do We Have Blood Types?" is at 2:53
(Spoiler alert) The answer is: "We don't know" :(
Call me when you can replace my bones with Adamantium .
Thanks. Nice to know the bloody truth!
if you answered AB-, you're wrong. it's RHnull.
Damn, the video title is "why do we have blood types," and he literally spent like 10 seconds around 3:30 to say basically we just don't know. lol
I wish videos that have the word why in the title would have the word because in the context. We have blood types because...Nothing wrong with his explanations just not the answer to the question he is posting.
@4:17
4:00 My blood type is O+ and I think both my parents are A+. And I know they are my parents because various other markers match and still I happen to have different blood type than both of them.
They are AO+
Wait Aren’t antigens the things that are on almost all organic cell which trigger an immune response if it is foreign?
Why is Oliver queen teaching me science?
Interesting piece, but a bit simplistic. If you are just giving some one a type match ABO Rh -/+ are quick an easy. However that’s not the ideal.
The ideal is a Type and Match. This be a cause there are 36 agreed upon Blood Group Systems and 2 more awaiting inclusion.
There are also a total of 36 variables in each Humans blood typing to match and over 346 Red Blood Cell Antigens.
To make things even more complicated, some of the genetic material that is expressed in Blood Type and Match are Mosaic. Meaning they can express different aspects of each parent’s alleles.
This is why when a patient’s blood is drawn for any possible transfusion, they are given a unique, Blood Bank ID band. In this way there are double checks when blood leaves the lab, when blood arrives at the nurses station and again when the blood is hung.
Usually only one Med Tech will work the Blood Bank for their entire shift.
Incidentally, we already a fluid that mimics the composition of blood, minus cells.
Generally when a patient is receiving fluids, they are receiving Normal Saline (0.0% Sodium Chloride). This is fine, but not ideal. Normal Saline has a nasty habit of raising a person’s K level, which in many cases can be contraindicated.
In addition NS is slightly basic, while blood is slightly acidic. Acid + Base = Salts and H2O. This can mean RIDONKULOUS water retention.
I had 2 surgeries go sideways 40 hours apart. When I woke up 4 days later, I looked like the Stayed Puffed Marshmallow Man.
Lactated Ringers, on the other hand, closely mimic the chemistry of blood and is slightly acidic. I does not cause K spike, nor does it cause immense swelling, because, minus the cells, it mimics the chemical composition of our blood very closely. There are therefore fewer chances of side effects. Though if over used, it too can lead to edema. It is also contraindicated for patients who have Cirrhosis, Congestive Heart Failure, Hypoalbuminemia and Chronic Kidney Disease.
It might just be me, though I am a statistical outlier, but if your going to discuss blood types, tell the whole story. 🥺🥺🥺
Either you completely forgot to talk about the complications that may result from the interaction between donor's plasma and recipient's antigen or just ignored it to avoid making the video too complicated.
You explained why it is dangerous to receive an invalid blood type, yet you havent explained why type 0 is universal if both antibodies are present
Keep it up. This is how you make zombies.
Braaaaiiiiiiinnnnnzzzzzzz.....!
Bloooooooddd....
Pancreas in a nice, creamy white wine sauce, with a side order of desert truffle almondine, finished with the most _to die for_ Sachertorte.
What? Zombies can't be erudite, cultured gourmands? That's racist, vitalist, and all manner of offensive -ists, good person. We're not *all* braindead, slavering, flesh-maws, you know.
@@sdfkjgh nice!
I hate when videos don't even try to answer the question in the title.
hybridization?
So the cov2 vax produces antibodies that have an effect on self-antigens? Or are binding to healthy receptors
Made an entire video with a terrible summery of how blood works just to give people the answer "We don't know" to answer the video title... How disgusting the click bating has become on youtube.
I disagree with the number of things you said. Namely I don't believe Rh negative blood has been around that long. And while I have no proof to support my opinion, you have no proof to support yours either.
I was told that I can’t donate blood because I have uncommon antibodies- what does that mean?
The title is a bit misleading. You hardly talk about WHY we have bloodtypes and instead spend most of the video about what bloodtypes are. I knew that already. The bit about trying to make all blood into O blood is interesting, but also not covered by the title....
2:52 - 3:19 was the only segment that addressed the question: "Why Do We Have Blood Types?" 27 seconds, or 6% of the video. The answer was: "First off we don't know why..." Waste of time.
"this information plus a century of research.." ikr so easy.
So that mosquitoes can have different flavours...
Finally my AB+ blood will be useful to donate.
Donate plasma if you're type AB. Plasma transfusion basically works backwards. Type AB is the universal donor type for plasma.
A cuestion very easy. .... ☆
I thought the AB blood type only came into existence with Agriculture in the last 10k years?
Weary Dunlop used coconut milk for transfusions.