The Immune System Explained I – Bacteria Infection

  • Published: 01 July 2014
  • Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome. An animation of the immune system.

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    Why you are still alive - The immune system explained

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Comments • 23 368

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  • simon gatuak
    simon gatuak  2 hours back

    i learn a lot from this video and it increases my skills

    • Maksymilian Starczewski


      • bhavya adhikari
        bhavya adhikari  3 hours back

        At 4:47, the term 'plasma cells' is used first time without specifying that a plasma cell is effector/ activated B cell. Just an observation. Very informative video. Thanks.

        • Luis Angeles
          Luis Angeles  9 hours back

          Lol, for Aiur!

          • The one who smiles Yay HAPPY DAYS

            2019 anyone xD

            • Haziq Aiman
              Haziq Aiman  10 hours back

              i do the virus

              • Rayner Sulaiman
                Rayner Sulaiman  11 hours back

                While we are amazed how these cells work just to protect us, why aren't we wondering who made these complicated system? Don't tell me it's just a product of chances that took place a million years ago. It's impossible for that without supreme Creator engineered and designed it.

                • Kosmiczny Szkieletor
                  Kosmiczny Szkieletor  12 hours back

                  One of best *crusades* ever

                  • Minati Lodh
                    Minati Lodh  12 hours back

                    Very very bad I cant understand it is too fast😑😑😑😑

                    • Bima P
                      Bima P  17 hours back

                      This explained everything, kurzgesagt

                      THANK YOU ❤

                      • Ernie Cheng
                        Ernie Cheng  18 hours back

                        6:05 then why not just do this at the beginning and stay this way

                        • CGSS1W25 DoMíNioS CGSS.DoM'S


                          • _ LifeSucks _
                            _ LifeSucks _  1 days back

                            “Virgin B cell”
                            *sounds very virgin*

                            • Eri Morikawa
                              Eri Morikawa  1 days back

                              her belt is pokemon!

                              • pedro.hpileta
                                pedro.hpileta  1 days back

                                For Aiur!

                                • 澳門仔
                                  澳門仔  1 days back

                                  1:18 Pokemon!

                                  • Lasik Center
                                    Lasik Center  2 days back

                                    awesome explanation, Keep it up.

                                    • Mukund Mohan
                                      Mukund Mohan  2 days back

                                      Plz tell us how to maintain a healthy immune system

                                      • KiR Leepes
                                        KiR Leepes  2 days back

                                        Top 5 most glorious fights

                                        • Jackson Roberts
                                          Jackson Roberts  2 days back

                                          For some reason I come back to this video every now and then

                                          • Mr Cracken
                                            Mr Cracken  2 days back

                                            This whole video is explain in the cells at work anime

                                            • just ignore me
                                              just ignore me  2 days back

                                              Cells at work

                                              • Fantasmic Art 2312
                                                Fantasmic Art 2312  2 days back

                                                How biology on the immune system reveals the battlefield strategy in WW2

                                                • SomeKid IgUess
                                                  SomeKid IgUess  2 days back

                                                  Imagine if someone made a strategy management video game from this? 0_0

                                                  I would be so addicted to it

                                                  • Mikul
                                                    Mikul  2 days back

                                                    Wow! This still holds up pretty wall today, but you have come a LONG way in terms of script. topics and visuals. Thank you Kurzgesagt for always trying to improve- even though most would've considered this to be "good enough".

                                                    • Megan Rieger
                                                      Megan Rieger  3 days back

                                                      hey i really love ur videos. watching as well as listening. i was wondering if u guys had a proper show like on netflix or tat u could download?

                                                      • PRABOWO SANDI OFFICIAL

                                                        For aiur

                                                        • Kaga Kouko
                                                          Kaga Kouko  3 days back

                                                          While your watching Netflix, the whiteblood cells are having a war..

                                                          • ChewsWisely AMVs & Nightcore

                                                            Love this video, can you make more about the immune system/body/viruses please?

                                                            • Fredome King
                                                              Fredome King  3 days back

                                                              Cells at work

                                                              • Jian Li
                                                                Jian Li  3 days back

                                                                Kurzgot sausage

                                                                • Akkarin Vorawong
                                                                  Akkarin Vorawong  3 days back

                                                                  0:01 I saw Pokéball

                                                                  • not another underfag
                                                                    not another underfag  3 days back

                                                                    we’re like a little planet with our own ecosystem!

                                                                    • Sanic The Hotdog
                                                                      Sanic The Hotdog  3 days back

                                                                      Hey immune system where were you before antibiotics? Phages and antibiotics are doing your job.

                                                                      • Hrishabh soni
                                                                        Hrishabh soni  3 days back

                                                                        make a videos on kock itch or ringworm fungus on skin

                                                                        • Tanaka Harutora
                                                                          Tanaka Harutora  3 days back

                                                                          When u watch cells at work Anime and now u understand more than the video 🤣🤣🤣

                                                                          • roze
                                                                            roze  4 days back

                                                                            Watch "Cells at Work" for maid macrophages.

                                                                            • Mr Bucky
                                                                              Mr Bucky  4 days back

                                                                              Antibodies: its rewind time

                                                                              Bacteria: why do I hear boss music?

                                                                              • Mostafa Mohamed
                                                                                Mostafa Mohamed  4 days back

                                                                                please dont ever stop that amazing work ever

                                                                                • Jurica Sambol
                                                                                  Jurica Sambol  4 days back

                                                                                  bacteria, virus and fungi: attack the body

                                                                                  the immune system: im about to end this mans whole career

                                                                                  • Venix -
                                                                                    Venix -  4 days back

                                                                                    Macrophages are especially good at *GNOMING* up the bacteria which antibodies have latched on to

                                                                                    • Jurica Sambol
                                                                                      Jurica Sambol  4 days back

                                                                                      this video is godly.

                                                                                      • Rexford Socorin
                                                                                        Rexford Socorin  4 days back

                                                                                        This video made made me feel proud of my immune system ! I love u all my immune system cells 😘😘😘😂

                                                                                        • Baptiste Gameur
                                                                                          Baptiste Gameur  4 days back

                                                                                          Every day on you body its thé battle for the middle-hearth

                                                                                          • No name
                                                                                            No name  4 days back

                                                                                            sounds like attack on titan lol

                                                                                            • SuperStriker7US Team Name:The Last Bosses

                                                                                              But what if the Bacteria won somehow?

                                                                                            • Salesman
                                                                                              Salesman  4 days back

                                                                                              They are cute