Cell vs. virus: A battle for health - Shannon Stiles

  • Published on Apr 17, 2014
  • View full lesson: ed.ted.com/lessons/cell-vs-virus-a-battle-for-health-shannon-stiles
    All living things are made of cells. In the human body, these highly efficient units are protected by layer upon layer of defense against icky invaders like the cold virus. Shannon Stiles takes a journey into the cell, introducing the microscopic arsenal of weapons and warriors that play a role in the battle for your health.
    Lesson by Shannon Stiles, animation by Igor Coric.

Comments • 1 681

  • Jacey Long
    Jacey Long 20 hours ago

    You are now breathing manually

  • Rmathew 523
    Rmathew 523 Day ago

    There is a life inside you that has a life inside it

  • owerlord
    owerlord 3 days ago


  • EthicalGro
    EthicalGro 5 days ago

    I like these kinds of videos

  • Daddy long legs
    Daddy long legs 5 days ago


  • iiJoeCats
    iiJoeCats 9 days ago

    1:49. I am haxing

  • Alan Williams
    Alan Williams 9 days ago

    mmmm that's not quite how it works in the beginning. Dendritic cells snipe and consume one or two viruses on purpose and then dismember them. They then display body parts on the outside of the cell wall and travel to a lymph node where they communicate with T and B cells about the invader. There is no.....Trojan horse..... :/

  • Acro Ghost
    Acro Ghost 11 days ago

    just use *Bacteriophage* it kills bacterias Only lol

  • Acro Ghost
    Acro Ghost 11 days ago

    so the cells are a million times more many than the humans on earth

  • GrandAviat0r
    GrandAviat0r 13 days ago

    With this knowledge.. each time I get sick or something, I have started a war. So....
    *gets cut by knife on accident*
    *World War 456788919101 starts in Body*

  • Game On!
    Game On! 13 days ago

    I never thought Biology would be this cool in schoo 😶l

  • Countrycowboy08
    Countrycowboy08 14 days ago

    3:05 did the oxygen just flip me off?

  • XBoss Wave
    XBoss Wave 16 days ago

    3:05 That oxygen is giving me a middle finger

  • Jack Sparrow
    Jack Sparrow 22 days ago

    Whaoo,our body is ssooo cool

  • Adam Dayrit
    Adam Dayrit 23 days ago

    This demonstration is awesome.

  • Ornithocowian King
    Ornithocowian King 24 days ago

    So cute

  • Internet Cancer
    Internet Cancer 24 days ago

    Spent 6 lessoms to learn this at school and not even all of this

  • ImpulseFTP
    ImpulseFTP 27 days ago +1

    * just watch cells at work *

  • Amy曖
    Amy曖 29 days ago


  • John Schatzman
    John Schatzman Month ago +1

    oh yeah yeah

  • Bunny Brawler
    Bunny Brawler Month ago

    What they have spears but also computers?

  • Doc671 SnowJoke
    Doc671 SnowJoke Month ago


  • Dumz Dee
    Dumz Dee Month ago

    I rather watch these videos then listen to teacher explain it. :0

    • Dark Shaden
      Dark Shaden 28 days ago

      And then in exam write that last time they use Vector (gun name) to fight bacteria. in oct 2018 war, first nuclear bomb was used. Although it kill bacteria but also made those cell not sutable to work.
      In war of nov 2018,
      (History book)

  • Mark Matthew Vitug
    Mark Matthew Vitug Month ago

    This video is in complete

  • Master jr
    Master jr Month ago


  • DCS A
    DCS A Month ago


  • Wilian Rodrigues
    Wilian Rodrigues Month ago +1

    Not until Semester 2 in Biology is now I know why it only has AT and GC only paired and why those are the only letter

  • Wot you Lookin at?
    Wot you Lookin at? Month ago

    I bet America can’t enter my cells 👌🏻😂

  • MonkeyBoy32904
    MonkeyBoy32904 Month ago

    existance is useless

  • Matthew Kim
    Matthew Kim Month ago

    Wait a minute, what if one of the parts of the cell misfunctions?

  • Samael Edwards
    Samael Edwards Month ago

    this would make a great game

  • xxhalogamer22xx
    xxhalogamer22xx Month ago

    What is one of your body cell betrays you and secretly works for the enemy?

    • Real Creator
      Real Creator Month ago

      That's cancer or a cell that's overcome by a virus that can't go through apoptosis. It needs to be induced instead.

  • Daniel Guo
    Daniel Guo Month ago

    Kurzegsagt is more scientific
    But this is more simplified

  • arjun krish
    arjun krish Month ago

    so how did i get cold then

  • That Guy Channel Symulator

    War... War never changes

  • Wendy’s/ Hail
    Wendy’s/ Hail Month ago

    Why did the virus want to go in the cell/castle it’s suicide

  • mitchanne mojica
    mitchanne mojica Month ago

    The dislikes are plague inc players

  • Xim.
    Xim. Month ago

    When I sat next to my friend and he coffee on me I surrenderd

  • Yhuwan Wong
    Yhuwan Wong Month ago

    Oh a trojan horse

  • Audrey ARNOLD
    Audrey ARNOLD Month ago

    How did the cold virus get in his lungs if he has no neck?

  • Crazy Minecrafter
    Crazy Minecrafter Month ago

    That is incorrect if the bacteria gets in the cell can do nothing it will die if it’s a bacteria it will multiply and kill the cell crating more bacteria RONG

  • SCP 1678
    SCP 1678 Month ago

    It's as if our bodies are man made civilizations!🤔

  • physics learning
    physics learning Month ago

    Great animation keep it up

  • Cheeseburger Monkey
    Cheeseburger Monkey 2 months ago

    *the nail starts a war in the body*

  • David Mills
    David Mills 2 months ago

    wow the vide-oh

  • Mr Memes
    Mr Memes 2 months ago

    If you have so much DNA, the cell looking for the right one is like searching the library of Babel for something by just looking through all the books.

  • Edvard Munch on the box

    This made me miss biology class😢

  • Trenton Pritchett
    Trenton Pritchett 2 months ago


  • Brandonz 9000
    Brandonz 9000 2 months ago +1

    So, we only need to eat and breath and that's it? That's all I'm gathering from this.

  • Freyr’s Apprentice
    Freyr’s Apprentice 2 months ago

    C6 H12 O6(glucose sugar)+ 6O2(Oxygen)->
    6C O2(Carbon Dioxide)+
    6H2 O(Water)
    (Animal respiratory cycle:how you get energy from food and oxygen)

  • Władca Wymiaru
    Władca Wymiaru 2 months ago

    It is NOT like that, see:
    stronger viruses do this:

  • AeroCaliberACE
    AeroCaliberACE 2 months ago

    Awww this vid is so cute!

  • DeadlyPunisher66 M,
    DeadlyPunisher66 M, 2 months ago


  • Pooja Barathithasan
    Pooja Barathithasan 2 months ago

    This is so clever! The animation is amazing

  • Weedlegaming 101
    Weedlegaming 101 2 months ago

    3:05 oxygen, I thought you were my friend.

  • Mr. Yeast_02496
    Mr. Yeast_02496 2 months ago

    mfw my cells do more than I do in a day

  • faza hanif suwanda
    faza hanif suwanda 2 months ago

    The O2 is cute and looks cool when he is Co2

  • James Mercurial
    James Mercurial 2 months ago

    The animation is cool. I wish biology teachers taught in this way.

  • Adnan Abdillah Ghifari
    Adnan Abdillah Ghifari 2 months ago

    Um.... much more than that. More than 78 trillion cells on our body.

  • Semin Gusinac
    Semin Gusinac 2 months ago

    Why does the oxygen have three fingers it looks like it's doing the finger

  • zeynep akın
    zeynep akın 2 months ago

    One of the most beautiful things that I have ever watchted! 💐💕👾

  • The gaming Tea
    The gaming Tea 2 months ago

    “The *cold* virus has made it into your throat” how do you know it’s a cold virus?

  • wakeupscreaming
    wakeupscreaming 2 months ago

    These animations are so fun. I wish I had them when I learned biology in the 80s :(
    It would be like someone describing the Macarena dance using just words -- no graphics, videos or animations.

  • Unknown User
    Unknown User 2 months ago +1

    Leaving things is my body?! AMAZING?

  • mark villio
    mark villio 2 months ago

    Whole other world living in our bodies.

  • AAnnxiety
    AAnnxiety 2 months ago

    Why did I learn this for more than a decade yet I learned everything in a 4 minute video.

  • AAnnxiety
    AAnnxiety 2 months ago

    Why is my body smarter than my brain.

  • Juan Pablo
    Juan Pablo 2 months ago

    We have near human intelligence

  • Ramses Serrano
    Ramses Serrano 2 months ago

    I thought this was sparta

  • memes mcgee
    memes mcgee 2 months ago

    This proves the mitochondria is the powerhouse of the cell

  • Kathryn Kuder
    Kathryn Kuder 3 months ago

    What about cancer

  • Thompson Dylan
    Thompson Dylan 3 months ago

    3:04 did that oxygen just flip me the bird?

  • Jana Eweiss
    Jana Eweiss 3 months ago

    i like it hey anyone saw dantdm in spore i love it reply if you saw it and like it

  • baby king game play and reaction

    When you cut yourself it is world war 2

  • Lukas King
    Lukas King 3 months ago +1

    It is 37 with 19 zeros oml

  • Lukas King
    Lukas King 3 months ago +1

    Man 3.7 to the 20th power dang that is a lot of virus killing maker machines

  • Praharsh Chaubey
    Praharsh Chaubey 3 months ago

    The t cell part should be added

  • SpecS
    SpecS 3 months ago

    1:12 When you fart 💨

  • Catto Productions
    Catto Productions 3 months ago

    Great, but this video only tells when the cell overpowers the virus, remember to tell the other side of the history!

  • It's Amazing!
    It's Amazing! 3 months ago

    A huge applause for this marvellous animation 👏👏👏

  • Detlaff von Drac
    Detlaff von Drac 3 months ago

    Mitochondria: The Powerhouse of the Cell

  • Canadian Mapping
    Canadian Mapping 3 months ago

    WW1 = A very very tiny cut
    WW2 = slightly bigger cut
    WW3 = Papercut

  • 1st Electron of Hydrogen Atom

    amazing ! everything you need to know about immunity is SUMMARISED. hey but plants do make energy from cellular respiration!!!

  • Dorothy AB
    Dorothy AB 3 months ago

    GOD is truly awesome

  • Kidgamer
    Kidgamer 3 months ago

    I like this because the castles just make it funer

  • sakshi Kumari
    sakshi Kumari 3 months ago +1

    Very funny ....... best video..

  • The Meme cat
    The Meme cat 3 months ago

    4 YEARS WOW this was made in 2015

  • Immortal Legends
    Immortal Legends 3 months ago +1

    looks like the cells are preparing for world war 3.

  • Variety of Everything
    Variety of Everything 3 months ago +1

    No. A virus injects it’s DNA into the cell, to make the cell release more viruses. It is the dendritic cell that warns T and B cells about it. The B cells make antibodies, and the T cells kill the infected cells with cytotoxins. It’s much more complicated.

  • Shubhan Ravi
    Shubhan Ravi 4 months ago

    The mRNA would have U and not T.

  • mark peracullo
    mark peracullo 4 months ago

    CELLS AT WORK anyone??

  • Dboy Smith
    Dboy Smith 4 months ago

    My teacher made this

  • HILTON Sothea
    HILTON Sothea 4 months ago

    It’s like a war in body’s but it’s ww3 in body’s now

  • Braindon Bonode
    Braindon Bonode 4 months ago

    Watch cells at work

  • Anonymous71475
    Anonymous71475 4 months ago

    DIE GERM!!!

  • adrian 31
    adrian 31 4 months ago

    So a cell is made of cells

    *Illuminati confirmed*

  • marshmello doggo
    marshmello doggo 4 months ago

    google how do i make antibodies ?

  • Maku - Kun
    Maku - Kun 4 months ago


  • Furious Warrior
    Furious Warrior 4 months ago

    Did anyone else breath until they get dizzy? because she said "They get energy from oxygen"

  • Tezlla Turtle
    Tezlla Turtle 4 months ago

    The oxygen looks like it’s flipping me off