Immune System, Part 2: Crash Course Anatomy & Physiology #46

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  • Опубликовано: 2 фев 2025

Комментарии • 1,1 тыс.

  • @crashcourse
    @crashcourse  4 года назад +167

    Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
    Download it here for Apple Devices: apple.co/3d4eyZo
    Download it here for Android Devices: bit.ly/2SrDulJ

  • @drumandball
    @drumandball 8 лет назад +2004

    Gotta love the moment when your're stressing out for your biology final and then you find yourself snickering because of the facial expression on a macrophage.

    • @mrblexit7152
      @mrblexit7152 6 лет назад +3

      Lol

    • @gabrielnito6606
      @gabrielnito6606 5 лет назад +2

      *cough* biosci107 *cough*

    • @MsNowii
      @MsNowii 5 лет назад +2

      H

    • @bryanfeliciano4102
      @bryanfeliciano4102 5 лет назад +16

      Lol, you probably aced it. I watched this after class and within 20 minutes I was like "IT ALL CLICKS!!!"

  • @1awlsusie
    @1awlsusie 8 лет назад +1823

    The animations just make everything very clear and bearable to observe the info much easier.

    • @ChristopherGray00
      @ChristopherGray00 7 лет назад +7

      Yeah, i love the production quality in these vids

    • @احمدالقدسب
      @احمدالقدسب 6 лет назад

      I want to know better but I can not why

    • @shellz3295
      @shellz3295 5 лет назад

      I'm #667 like♡.....couldn't leave it 666!!!

    • @arielsproul8811
      @arielsproul8811 5 лет назад +2

      2:46 and 2:51
      the transition from "finally going to beat the level" to "(inexpressible emotion, you know the one)" was great

    • @haizi7179
      @haizi7179 4 года назад +3

      Infographic animations about anything scientific are my porn

  • @petertilly9401
    @petertilly9401 9 лет назад +2774

    I'm really sick right now so I'm watching this somewhat for me, but I'm tryna teach my immune system to work correctly.

    • @KarascioM
      @KarascioM 9 лет назад +96

      I don't think it works that way...

    • @petertilly9401
      @petertilly9401 9 лет назад +260

      +KarascioM Im like 752% sure it does

    • @Zeekar
      @Zeekar 9 лет назад +161

      +Peter Tilly Worse comes to worse, at least you know your sickness looks adorable at the microscopic level.

    • @Soosss
      @Soosss 9 лет назад +2

      +xXx Fioletowy i długi banan który przemierza Redtu-, znaczy, RUclips z Planety Teletubisiów xXx woosh

    • @Soosss
      @Soosss 9 лет назад +50

      Obese Chicken I remember when I was a kid, I didn't want to go to school so I pretended to be sick, then I actually ended up with a fever. Placebo effects are weird

  • @alyssab537
    @alyssab537 4 года назад +138

    Watching this during COVID-19....interesting things to think about during these times.

  • @lukejouflas5589
    @lukejouflas5589 Год назад +45

    This man has taught me more about the immune system in ten minutes than my professor at a T20 school could in three lectures.

  • @agglyusr
    @agglyusr 4 года назад +94

    I'm so glad Hank has a kid. I bet his wife is super cool, too. Everyone at crash course must be pretty damn awesome. Thank you all.

  • @Scotticus25
    @Scotticus25 9 лет назад +726

    Can T-shirts be made featuring the adorable defense cells please.

  • @petraleong
    @petraleong 9 лет назад +406

    now i want a plushie of all the different immune cells... they are so cute!

  • @priceaka13
    @priceaka13 8 лет назад +364

    Studying with animation is the best

    • @filitali4n
      @filitali4n 8 лет назад +8

      Price Chinedum if I could thumbs-up this 100 times I would

    • @deanc9453
      @deanc9453 5 лет назад

      +

  • @daedra40
    @daedra40 9 лет назад +146

    The animations are so cute and lovely (even though the actual antigens are typically jerks-to-humans), the content so educational, and the fact that this is the penultimate episode is so upsetting. Long live crashcourse!

  • @johnnathanalvarado3206
    @johnnathanalvarado3206 4 года назад +14

    You guys are amazing. I am in nursing school, and this is my distance learning assignment. I don't think learning about anything has been this interesting ever. Love the World of Warcraft and gaming references. Nerds rule! Thank you!

  • @someperson111
    @someperson111 8 лет назад +82

    This is easily the best video you've guys and girls have done graphically. I'll never forget memory cells looking like wizards lol

  • @1075Rah
    @1075Rah 9 лет назад +183

    Oh my god, he used a Maplestory animation. I never thought I'd see the day. Gj man.

    • @JayjayCampos
      @JayjayCampos 7 лет назад +2

      1075Rah same! I miss MS!

    • @JayjayCampos
      @JayjayCampos 6 лет назад +4

      i logged back in and it wasnt the same. it gave me anxiety just looking for whatever i need. Its not the same. -_-

    • @elfatimah3755
      @elfatimah3755 6 лет назад +4

      hahahah i'm shocked when i saw orange mushroom, and i was like "did he plays maplestory too?'

    • @JayjayCampos
      @JayjayCampos 6 лет назад

      El Fatimah lol

  • @SBroproductions
    @SBroproductions 9 лет назад +173

    Bio Exam is tomorrow, was literally waiting for a week. Thanks Hank :)

    • @rudabuddhagaming3120
      @rudabuddhagaming3120 9 лет назад +1

      +SBroproductions Are you in my Bio class? o.O hahaha

    • @SBroproductions
      @SBroproductions 9 лет назад

      RudaBuddhaGaming Jill Ranger, Charlie, Ursala? Do those names sound familiar?

    • @rudabuddhagaming3120
      @rudabuddhagaming3120 9 лет назад +2

      Yes! Who's your teacher?!

    • @SBroproductions
      @SBroproductions 9 лет назад +2

      RudaBuddhaGaming Jill Ranger. You?

    • @lisha9659
      @lisha9659 9 лет назад +2

      +RudaBuddhaGaming Good luck you two :)

  • @sierralobo7163
    @sierralobo7163 8 лет назад +739

    Why is everything so darn cute? XD

    • @Kay-ni5bm
      @Kay-ni5bm 8 лет назад +29

      especially Hank lol

    • @shenellsmith6849
      @shenellsmith6849 8 лет назад +1

      ikr😃😊

    • @denizenmom3905
      @denizenmom3905 7 лет назад

      Sierra Lobo idk but it’s adorable

    • @cornpatches3060
      @cornpatches3060 6 лет назад +1

      maplestory look it up green jelly and mushroom characters are in it its a mmorpg

    • @AxelZaore
      @AxelZaore 6 лет назад

      probably because sometimes it's way more boring in real life lol

  • @coenijn
    @coenijn 8 лет назад +8

    It's pretty funny how I, a 3rd year biomed student, learn 1 or 2 things in these episodes that I didn't learn from my immunology prof. Good job Crash Course, good job.

  • @haileyquartermain379
    @haileyquartermain379 9 лет назад +23

    I had no idea what my prof was talking about when they explained this in class. This helped me so much! May actually pass my midterm now!

  • @vdyphuong
    @vdyphuong 5 лет назад +13

    Thank you so much for making these amazing videos. I used to watch these when I was taking A&P in undergrad. Now, I rewatch them as a refresher course for Advanced Pathophysiology. Still helpful as ever!

  • @nikolaralchev5811
    @nikolaralchev5811 4 года назад +5

    I passed my physiology exam, thanks to this dude !!!

  • @mandya3105
    @mandya3105 9 лет назад +49

    MAKE A GAME OF THIS PLEASEEEEEE

  • @robynmcmillan
    @robynmcmillan 8 лет назад +4

    Who else wishes there could be some kind of cartoon animation series telling the heroic stories of our bodies' cells battles with germs? These animations are toooooooooooooo cool!!

  • @41767762
    @41767762 6 лет назад +5

    I am in the library watching this and could not stop smiling :) People around me must think I am procrastinating! Love the animation and how you explain things. Makes learning so much more fun! Thanks heaps.

  • @BRockandriffs
    @BRockandriffs 9 лет назад +1674

    Am I the only one that watches these for fun and personal use rather than for a class? Just curious

    • @Lumamaster
      @Lumamaster 9 лет назад +41

      +BRockandriffs I do as well! Plus the animations are AWESOME!

    • @erikziak1249
      @erikziak1249 9 лет назад +20

      +BRockandriffs No, you are not the only one.

    • @darrianweathington1923
      @darrianweathington1923 9 лет назад +5

      +BRockandriffs im sure most ppl watch for fun, i dont think most classes go this far in A&P anyway, they usually stop right before reproduction

    • @arousedsquirrel2429
      @arousedsquirrel2429 9 лет назад +3

      +BRockandriffs Nope I do it for the exact same reasons. These videos help me understand, well, a lot of stuff;, and enable me to go onto some much more serious websites with a solid amount of knowledge.

    • @BRockandriffs
      @BRockandriffs 9 лет назад +2

      +Aroused Squirrel could you name me some of those "serious websites" you mentioned for my personal reference if that's not too big a favor to ask a stranger.

  • @MargetMints
    @MargetMints 9 лет назад +7

    Animation was so cute, so accurate and Hank is so charming... LOL
    I always 'like' these videos before even starting 😙

  • @travisk5589
    @travisk5589 5 лет назад +1

    I have watched dozens of Crash Course videos for the past year. Everything from chemistry psychology and anatomy and physiology. This three-part series on immunity is by far the best. Hysterical and easy to understand thanks for you guys it's time for making memes.

  • @maffieumufasa3155
    @maffieumufasa3155 5 лет назад +8

    These animations are so good and helpful.

  • @t0natiuh454
    @t0natiuh454 7 лет назад +1

    Hello! Right now Im studying for Pharmacological Chemistry and for my 16 years old sometimes i really struggle while trying to remember things but this channel is so amazing!! the animations make everything so easily going that i just enjoy watching all your videos, definitely i will recommend this channel to my classmates!.

  • @hendrikswart4814
    @hendrikswart4814 8 лет назад +6

    Wow, you make it so easy to understand this complex system. Thank you for saving my grades.

  • @cavemanzipper6813
    @cavemanzipper6813 5 лет назад

    Whoever did the animations for this immune system series has TAKEN IT TO THE NEXT LEVEL @_@

  • @metushelach8
    @metushelach8 5 лет назад +17

    4:32 Actually not entirely accurate. Activation by T-independent antigens is weaker and does not result (usually) in immunologic memory (in contrast to T-dependent antigens
    which gives a stronger response, resulting in the development of immunologic memory).
    But I guess they wanted to keep it simple.

    • @Aphelia.
      @Aphelia. 5 лет назад +1

      Yeah I wanted to hear more about T-cells

  • @iartistdotme
    @iartistdotme 9 лет назад +2

    Excellent series! I wish you had a slow motion button so I could slowly absorb all you are saying. I guess just replay over and over works and appreciate this info SO much!

  • @Dan-cg1te
    @Dan-cg1te 8 лет назад +33

    Im a simple man, i see Maplestory reference, i like the video.

  • @FadahNassar-qq9ud
    @FadahNassar-qq9ud Год назад +1

    Watching crash course is THE best way to learn !!! 🙌🏻🙌🏻

  • @RNH2O
    @RNH2O 8 лет назад +456

    Hey future nurses!!!

    • @artemisstehley4606
      @artemisstehley4606 8 лет назад +11

      Hello! It's nice to meet you! :-D

    • @RNH2O
      @RNH2O 8 лет назад +9

      Jessica Stehley hello!! Nice to meet you 😊happy studies to you!

    • @matthewwayne98
      @matthewwayne98 7 лет назад +5

      Hey, happy studies, from a future rad tech here!

    • @09Drdray
      @09Drdray 7 лет назад +1

      Well hello

    • @livelikeyourdieing15
      @livelikeyourdieing15 7 лет назад +1

      Almost a year later lol but hey 😊

  • @ParkerSolemSevier
    @ParkerSolemSevier 9 лет назад

    This video just answered a question that has been bugging me for years. This has been the most anticipated CrashCourse episode for me for that reason.

  • @atomicsassy
    @atomicsassy 8 лет назад +30

    The Maplestory reminiscence T.T Love this!

  • @romero1337
    @romero1337 9 лет назад +2

    This is the best channel on youtube, great work crash course keep it coming!

  • @NjniaVanDerWald
    @NjniaVanDerWald 9 лет назад +12

    animator is on a roll! Keep taking what you're already taking. Seems like a reasonable drug!

  • @brockmolloy5532
    @brockmolloy5532 9 лет назад +1

    Posted right as I have an immune system test tomorrow. Bless you

  • @RangerSparky73
    @RangerSparky73 8 лет назад +57

    AH i love the animation in this, it's always so cute!

  • @AngelTerri
    @AngelTerri 9 лет назад +2

    No!!! I can't live without Hank!

  • @skyliner114
    @skyliner114 9 лет назад +60

    These cells are too cute.

  • @noelfalabi5979
    @noelfalabi5979 4 года назад +1

    Im watching right now because of COVID-19, great video!

  • @faifai4
    @faifai4 9 лет назад +9

    Hank, you make this educational vid so fun for kids to watch. =D

  • @kamohelomotsoeneng5599
    @kamohelomotsoeneng5599 6 лет назад

    i appreciate his change in tone argh hank is adorable

  • @drink15
    @drink15 9 лет назад +189

    Didn't think anyone remembered Maplestory.
    Any old Gunbound players?

    • @Lumamaster
      @Lumamaster 9 лет назад

      +drink15 I remember my brother playing that game when I was very, very young and didn't know much.

    • @Enix19MS
      @Enix19MS 9 лет назад +7

      +drink15 Yeah, I played both Maplestory and Gunbound. They were fun in the past.

    • @Borednesss
      @Borednesss 9 лет назад +1

      +drink15 Pro boomer

    • @mdnpascual
      @mdnpascual 9 лет назад

      +drink15 nakmachine player reporting

    • @silver222333
      @silver222333 9 лет назад

      +drink15 Pro asate here and also quite some years on Maplestory

  • @jessn8700
    @jessn8700 6 лет назад

    You make these painfully boring textbook readings so easy to listen to and retain! Thank you!!

  • @electromika
    @electromika 9 лет назад +504

    My humoral system only protects my forearm, right?
    Man I'm humerus today.

    • @TheScheiss
      @TheScheiss 9 лет назад +1

      Jejejeje

    • @jamesfidge
      @jamesfidge 9 лет назад +38

      humorus is the upperarm bro

    • @electromika
      @electromika 9 лет назад +11

      +James Fidge Did you hear that? That was my joke flying over your head.

    • @TheHanspeter8
      @TheHanspeter8 9 лет назад +21

      +Sulthan14 I think he got the concept of your joke (the word play between humerus and humorous) but he was merely correcting your error. You should have said "My humoral system only protects my upperarm, right? Man I'm humerus today."

    • @NijosoSefzaps
      @NijosoSefzaps 9 лет назад

      +Sulthan14 What's the joke? Don't you know some people have broken their humerus before?

  • @lamisseq
    @lamisseq 8 лет назад

    CRASH COURSE IS A LIFE SAVER!!!!

  • @TheDeekins
    @TheDeekins 9 лет назад +10

    Gonna miss this series, I learned a lot. Thanks so much for all you do Crash Course.
    Also scrolled down looking for anti-vaxxers, I'll admit it

  • @uprisendemonds4770
    @uprisendemonds4770 5 лет назад

    Bruh, the anglerfish got hit on his lightbulby-head by Hank by 3:00 😂😂😂 it’s so cute!!!

  • @WutLawl
    @WutLawl 8 лет назад +39

    crash course please do some grad level stuff ID LOVE YOU LONG TIME. 😎

  • @danieldonovan4063
    @danieldonovan4063 7 лет назад

    Wow ... this is the best system Crash Course has covered. VERY easy to comprehend considering how complex the immune system can be. I just emailed this to my anatomy professor. Well done, please keep these kind of videos coming!!

  • @aang7505
    @aang7505 8 лет назад +7

    I love how they sneak in Pokemon in their episodes!

  • @timstring0902
    @timstring0902 9 лет назад

    This Immune System Crash Course series is the best crash course I ever had :)

  • @aftermach5542
    @aftermach5542 5 лет назад +5

    Cells: I remember *EVERYTHING*
    Me: I can’t remember for my anatomy test :(

  • @234vmv8
    @234vmv8 9 лет назад

    Hank is awsm....now all my concepts are clear....without forcing my self to read boring books

  • @brianfebles3113
    @brianfebles3113 2 года назад +3

    if you guys make an actual video game like that i will play for sureeee, thank you for these awesome videos.

  • @carmenpuisis1082
    @carmenpuisis1082 5 лет назад +2

    Crash Course should make movie of fighting germs in our bodies. It would be very interesting and knowledge that everyone need to know about our body fighting system.

  • @carlitosvodka
    @carlitosvodka 9 лет назад +3

    I REALLY LOVE HOW THIS IS EXPLAINED. SCIENCE IS FUN! KEEP DOING GREAT STUFF. DFTBA!

  • @serenityfosdick7648
    @serenityfosdick7648 7 лет назад

    I have a pathophysiology test tomorrow over this god bless you

  • @romjr1602
    @romjr1602 9 лет назад +25

    Hi guys from CrashCourse! I'm willing to donate some of my time for you.
    I can translate videos to Portuguese!
    Just pick one!

  • @auggirangel8829
    @auggirangel8829 7 лет назад

    This is the best way to teach honestly, I was engaged through the whole thing... I leveled up!

  • @sharwinharkal9933
    @sharwinharkal9933 7 лет назад +3

    Can't thank you guys .... appreciated n please don't Stop doing this job.... an awesome job ...... thank you

  • @BB-hv8dh
    @BB-hv8dh 6 лет назад

    I have an exam tomorrow and this is the cherry on top of my study sundae.
    Thank you team Crash Course~!

  • @disappointmentjuice8676
    @disappointmentjuice8676 5 лет назад +4

    0:02 is that a neutrophil cosplaying as link im losing it-

  • @amalbousere3470
    @amalbousere3470 7 лет назад

    my exam is tomorrow and these videos came extremely helpful
    i'm really in love with this channel everything is well made the animation is fun it keeps me entertained it would had been better if you had mentionned cytokines but it's not a big deal, please guys keep up the good work

  • @BenG9C9
    @BenG9C9 9 лет назад +4

    This is a great series!

  • @kodyfrost
    @kodyfrost 5 лет назад +1

    Most important line spoken is at 2:02

  • @TheCaptain14
    @TheCaptain14 9 лет назад +7

    4:17 HYPER BEAM! (Pokemon Red/Blue & Gold/Silver)

  • @janicegarcia604
    @janicegarcia604 6 лет назад +2

    Thank youuuuuuuuu.... Definitely helped me prepare for my next Microbiology's test....
    👍🙌👏

  • @MultiMaikimaik
    @MultiMaikimaik 9 лет назад +4

    Maplestory? xD
    Awesome! I didn't know anyone remembered that game :D

  • @mvp_health-n-beauty
    @mvp_health-n-beauty 5 лет назад

    So important to understand that our adaptive system is also a communicator of an underlying cause. Understanding this gives greater opportunity to a solution and not just a management often refer to as “treatment” ... leaving treatments for those important opportunities of stabilization with further opportunities of health 😌

  • @AHo-ne2df
    @AHo-ne2df 9 лет назад +4

    So excited for last episode!!!!

  • @chibinyu1548
    @chibinyu1548 4 года назад

    Wow, the animation about antibodies made me understand their roles for the first time, thanks a lot! Sending a hug from Brazil!!! :D

  • @zacharylai6933
    @zacharylai6933 5 лет назад +15

    The animation is so cute that i kinda feel bad when the flu virus gets binded to the b cell and frowned :(

  • @prabhleengahunian3329
    @prabhleengahunian3329 7 лет назад

    These videos are the only reason I get any work done. So thankyou :)

  • @jenniferdoss622
    @jenniferdoss622 5 лет назад +5

    Thank you! These videos are making it possible for me to pass (specifically write essays) for Microbiology, and Anatomy & Physiology 1 & 2

  • @ersantosjr
    @ersantosjr 8 лет назад +1

    thank you guys for this. Thank God for this youtube channel. this has helped me tremendously prepare for my advanced pathophysiology class!
    you guys make dense information sound so fun!

  • @Kingwut117
    @Kingwut117 9 лет назад +8

    NO I CANT WAIT :(
    This is so cool

  • @adellewoodcock2944
    @adellewoodcock2944 8 лет назад

    I have to say, i have been struggling with this for 2 days, this video made so much sense. Thank you so much!

  • @jackmack1061
    @jackmack1061 7 лет назад +3

    Gentlemen, take particular note... Just a warning that mumps immunity can be lost. I am a medical student nearly 50 years old and as part of preparation for placements in the clinical setting we need to be fully immunised... blood test revealed have lost my mumps immunity since having mumps as a child.

  • @almustafaaraz2073
    @almustafaaraz2073 5 лет назад

    The person who creates these illustrations is amazing

  • @bunkieboy3052
    @bunkieboy3052 5 лет назад +124

    "And that's why vaccinations are pretty much the greatest thing ever"
    Anti-Vaxxers: *surprised Pikachu face*

  • @walkthroughs1544
    @walkthroughs1544 8 лет назад

    Excellent videos!, but I recommend setting the speed to 0.5. Those wonderful animations are very informative and simple. It will get you an A+ in your subject for sure!

  • @Zsil33
    @Zsil33 9 лет назад +9

    Those bacteria that got captured by antibodies were so done with the immune system...its like they were saying "Seriously? Again?"

  • @MrKartik100
    @MrKartik100 9 лет назад +1

    Thanks man you're helping me get through medical school :')

  • @liekes9344
    @liekes9344 9 лет назад +8

    Lol maple story! That was a game I played a lot once upon a time 😝

  • @oludaebyrd4801
    @oludaebyrd4801 5 лет назад +2

    3:00 WHY'D HE KILL THE FRIENDLY MUSHROOM?!?!?!?!!? (I will never smile until I see another one of those cells that's JUST AS CUTE)

  • @ibraheemalshaer
    @ibraheemalshaer 9 лет назад +23

    can you please make an episode about vaccines, their advantages and disadvantages .. and give a general idea about the myths like "vaccines cause autism" and so ..!! :D

    • @enfantterrible456
      @enfantterrible456 9 лет назад +3

      Not a "myth" anymore. On August 27, 2015 dr. William Thompson who is a senior scientist and epidemiologist at the CDC through a whistleblower attorney released documents stating that the cdc lied about the connection between the MMR vaccine and autism in their 2004 article in the Journal Pediatrics. Check it out!

    • @joelvr101
      @joelvr101 9 лет назад +13

      +Enfant Terrible That really, really small chance of getting autism with vaccines against that really big chance of getting polio without them. I think ill choose for the option that won''t kill me.

    • @ibraheemalshaer
      @ibraheemalshaer 9 лет назад +4

      Joël Van Rijn exactly!!! thankyou! :D

    • @alexschrijnemaekers8067
      @alexschrijnemaekers8067 9 лет назад +1

      +Enfant Terrible Cool. But I prefer my sources over yours.
      scienceblogs.com/insolence/2015/08/05/the-cdc-whistleblower-william-thompson-appears-to-have-gone-full-antivaccine/

    • @mohamedalmajed2428
      @mohamedalmajed2428 9 лет назад +7

      +Enfant Terrible Wait. I can't believe that there actually *are* people who still think that Vaccines cause Autism. How shallow must you be.

  • @jonniehogan3998
    @jonniehogan3998 Год назад +1

    This is seriously so helpful to gain a better understanding then just from the book. You are amazing at this thanks so much for making Micro fun.

  • @LolixBelle
    @LolixBelle 6 лет назад +4

    watching cells at work while playing maplestory m...didn't expect the animation to do a tribute to maple ....XD

  • @JR-xz4zj
    @JR-xz4zj 9 лет назад

    i have my immunology test tomorrow and it's incredibly helpful

  • @masol3726
    @masol3726 8 лет назад +6

    So cool. Like ur cells fighting ebola and dont know how to defeat it so they are trying to destroy it. Then a cell that survived ebola, tells them the hacks and how to beat ebola.

  • @ilonalaverty
    @ilonalaverty 8 лет назад +1

    I swear these videos helped maintain my A in A&P!!! Thank you!!!

  • @StoneCresent
    @StoneCresent 9 лет назад +5

    Hank, where is the video on the mammary glands? I thought that they would be covered as part of the reproductive system videos but they are barely mentioned. Why is a defining feature of mammals largely absent from a course on human anatomy and physiology? I can think of reasons but I would prefer to hear your explanation on the matter.

  • @matthewperez07
    @matthewperez07 9 лет назад +2

    Man I love these series! I learn so much from these videos, thanks Crash Course for the amazing teaching!

  • @lateasecoddington-wardell3100
    @lateasecoddington-wardell3100 8 лет назад +3

    THANKS FOR HELPING UNDERSTAND WHATS GOING ON IN MY DAUGHTERS SWOLLEN LYMPH NODES

  • @tanning7269
    @tanning7269 9 лет назад +1

    I require plushies of the immune system cells. Immediately.