Cytotoxic T cells | Immune system physiology | NCLEX-RN | Khan Academy
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- Опубликовано: 18 фев 2010
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How cytotoxic T cells get activated by MHC-I/antigen complexes and then proceed to kill infected cells. Created by Sal Khan.
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i just like that you are drawing things out and explaining them, rather than pointing to an unmoving ppt presentation thats been molding around for years and years
Love your videos. great idea using different colors and breaking it down with imagines. So much easier than reading a definition. Thanks!
THIS IS THE BEST WAY OF TEACHING AS MY HEART SAYS
" I am a virus, I am a virus making maching, you better kill me!" This is great! If only my instructor made her lectures like this! Thanks for being a lifesaver!!
Been 10 yrs since you commented
"So the big picture is, if you want to just take 20000 feet." HAHAHAHAHAHAHAHAHAHA gotta love this guy! He always makes me day studying MCAT less shitty
What this guy does can't be done better. Unbelievable videos. The best! Thank you so much!
I just learned everything I need to know in an hour....than in 5 lectures...Thank you!
Now to answer the professors ridiculous reaching questions!
so these are what i've been learning in my lectures all this while!!thank you! u make my revision more enjoyable :))
you have made my life so much easier.. thank you. You are a legend!
Lesson learned: Shady characters need to die.
this is so brilliant! ty for the upload!
i'm so slow at understanding processes like this, thank you ! it was so easy for me to connect with this .
Your teaching skills are AMAZING!! Very unlike my own professor... I seriously learn better from you than from sitting in class where a teacher reads slides! Step by Step drawings and words are an enormously effective technique!
dude you have the best video about the lymphocytes on youtube! thanks!
much nice visuals, many help. so thank you
LOVE IT! GOD BLESS YOU!
I second the grammar video!
I really really love these videos. they help me tremendously.
Thanks Kahn you do a great job and have a new sub here. I need a break after watching two of your videos, but I certainly look forward to coming back and learning more.
Thanks again.
Thank you so much!!!! You helped me to get ready for the exam,
keep the good work! Greetings from Serbia!! Pozdrav iz Srbije!
I have been following your videos for a while, and omg every time I am in a topic, I am so amazed by you detailing and explaining skills. Khan academy is undoubtedly doing a great job of teaching people the basics of science.
This is absolutely amazing! you saved another medical student trying to connect the dots of the immune system! Good luck with everything, these videos are so so helpful :)
you doctor yet
How can someone possibly dislike this??
Awesome teacher!
sweet!!! this helped a lot for my microbiology class I wish all the teachers were like you !
This guy explains stuff SO well
i think i learn better watching these videos at 2x the speed lol
Same
Keeps you focused.
This is better then Science Fiction!!!! Amazing! Thank you so much!
Thank you very much for your helpful lessons! God bless you!
amazing video thank you so much!
thank you so much～now I manage to understand the whole process~~
Incredible videos on cytotoxic and helper t cells, B cells.... These helped me understand more than the college classroom! Thank you!!!
Best life sciences videos on you tube. Great logic of sequence!
Great audio presentation!
Best I've watched. But,
You should start with a page that already has the cells drawn. Then, as you describe or define, you can label that specific cell and draw the specific receptor involved.
This is an amazing video and exactly what i wanted to know regarding the T cells. so thanks a lot for the pleasent lecture.
was never so clear about this before... thank u osm videao to learn
Extreamly helpful!!!! I'm in med school and he explains it better than the book and/or the professors!!!!
Thank you so so so much! I didn't understand a word of what they talked about at uni and now I get it. Well, at least the basics, but that's more than I ever thought I'd understand. (Especially with a teacher with a strong accent). Thank you! You're awesome! :)
excellent! thank you!
thank you so much !!!!
fantastic video, finally understand, you're a legend
ah thankyou so much, so helpful you explain things so well! you're amazing :)
Thank u so much for such helpful content
really helpful! thanks :)
i can finally understand! my group spent so many hours trying to understand what the heck was going on, this simplifies it so much that i can teach it to them now :D
Thanks so much
You are a gifted and brilliant teacher. thank you so much!!
WOW. Great explanation. Now to time to youtube other things completely not about my final tomorrow.
Thank you so much for these videos Sal, you made me just a little bit smarter today. And you didn't bore me in the process. Big ups for that!! :D
thank you so much Khan Academy
Love the T cells!!!
4:58 In my immunology test tomorrow.
You really solved my problem with mhc1 and mhc11. Thanks.
I am SUCH a visual learner! Thank you thank you thank you!!!
Hi how are you dear
hey shady guy!!
love these videos so much!!
thanx a lot!! :D
great job khan sahad
your the best!!
awesomeeeee...i learn alot.
Entire semester of microbiology and came nowhere close to grasping it like I just did. Thank you
lol
عاشت ايدكم
thank u so much u have made my problem in mhc1 simpler.
Thanks alot ^^
Seriously, good stuff. Now i have more hope for my finals. :)
This Video helped me So So Much 💯💯🙏I love your Videos because I always learn so much!!! Thank You🤗❤
10 minutes before my test and I finally understand this material
You are the best thing that has ever happened to me! Maybe now I'll pas A+P II
Amazing
perfect
Thankyou so much for your video's they are amazing and really helping me revise:) Keep it up x
Man !!!You are tha MAN!!!!
Mr. Salman I wish if you were my teacher, i'm currently in basic immunity course at collage and the doc make it boring and not understandable
I'm glad that i found your channel, you helped me a lot and made it more interesting to study :)
Thank you so much for your efforts
Shot, this is on the MCAT, I have to study good, I might need it later.
amazing
God bless u
great job khan sahad
kindly expand u r area of teaching by including medical sciences
thank you very much man its really easy and important better than our books
i dream of becoming a doctor one day this helps so much and also i just saw this video
good video.
After 20 years into medicine.. I start understanding immunity after watching your videos
I feel sorry for your patients
@@mustafaal-ghezi1757 😳
RUclips just started doing that. It should be off now.
this is extremely helpful for MCAT
Pro!
Your vids are truly great.
But i'd like to add that thrombocytes are also not nucleated
4:54 "nuts" and sacrifice
lol
Along with MHC IIs, Dendritic cells also have MHC I
Same with macrophages and B cells
Science legend .
@Zturn
RBCs don't have nuclei nor any organelles like ER or mitochondria. So they don't have an MHC I.
But they get degraded in the spleen every ~120 days
Sphere--XL or KL-- for cell. SIDZPHERO= Sip this, carried drink-- cells and receptors-- nodes-- arteries-- vents-- caps. Rapido-- shaped organelles.
This guy knows everything, he's the voice for organic chemistry and differential equations
this is pretty basic undergrad stuff. almost everyone with a bachelor's degree knows as much..
yes probably really simple stuff. Studying it in yr 11
I have exams coming up, You have saved my ass!! (a grateful medical student)
I've never seen ads on his videos.
Im trying to find in your video a reference to APC licensing but can't :( Its where T helper cells bind to a dendritic cell via the mhc class 2 and cd4+, (as well as cd40-40L) and then allow the dendritic cell to express the processed peptides on the surface of their MHC 1, to allow the recruitment of cytotoxic cd8+ t cells?
I have a question...when you say the DNA gets shuffled around...do you refer to the post transcriptional modifications of pre-mRNA (exon splicing combination's)?
Because I don't think DNA can do that. THANKS
Great video btw!!
I totally agree, there needs to be a Khan-uni degree
"YOU BETTER KILL ME!" lol I love it
@stardanny33 He is referring to alternative splicing. Different ways to splice out introns creating different sets of mature mRNA to be translated, thus giving off different proteins. Also, it gains more variance through post-translation modification, such as different forms of sorting and glycosylation at the golgi before being presented on the surface. Hope that helps.
@addycastro @addycastro B cells display both MHC 1 and MHC 2. the antigens are presented on MHC 2 because the antibodies coating the membrane of the Bcell have attached to a foreign particle. this particle is then engulfed, lysed and some of the protein debris is presented on the MHC2 on the outside of the cell so the Helper T cells can come and help produce antibodies. MHC1 complexes only have antigens presented on them when a foreign body enters the cell without being engulfed...
no cytokines to activate CD8 T cells? just the MHC I ?
I love his enthusiasm on all subjects 😂 teaching is his calling
im actually gonna have to agree ngl
I LOVE YOU
@in2ennui "...sitting in class where a teacher reads slides! ..." sounds like one of my classes :p
the awkward moment when you realise youre paying uni loads of fees to educate you, but the place you learn the most are free videos on the internet...