To preorder IMMUNE click here: https://kgs.link/ImmuneBook –– It’s available in English and German and at online retailers it should be available in pretty much all countries too. Sources & further reading: https://sites.google.com/view/sources-immunesystemexplained/ The human immune system is the most complex biological system we know, after the human brain, and yet, most of us never learn how it works. Or what it is. Your immune System consists of hundreds of tiny and two large organs, it has its own transport network spread throughout your body. Every day it makes hundreds of billions of fresh cells. It is not some sort of abstract entity. Your immune system is YOU. Your biology protecting you from the billions of microorganisms that want to consume you and from your own perverted cells that turn into cancer. It's so manifold that it is impossible to cover in one video, so we’ll make a series looking at different aspects of it. Today, what happens when your body is invaded and your first lines of defenses are engaged in a fight for life and death? OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German Channel: https://kgs.link/youtubeDE Spanish Channel: https://kgs.link/youtubeES HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Merch designed with ❤ https://kgs.link/shop-147 Join the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Reddit: https://kgs.link/reddit Instagram: https://kgs.link/instagram Twitter: https://kgs.link/twitter Facebook: https://kgs.link/facebook Discord: https://kgs.link/discord Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The Kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of Kurzgesagt Soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook The Soundtrack of this video: Emergence Soundcloud: https://bit.ly/3jEvquO Bandcamp: https://bit.ly/2X30D2X Life Soundcloud: https://bit.ly/3CBAybK Bandcamp: https://bit.ly/37xr4ju If you want to help us caption this video, please send subtitles to subtitle@kurzgesagt.org You can find info on what subtitle files work on YouTube here: https://support.google.com/youtube/answer/2734698?hl=en-GB&ref_topic=7296214 Thank you! 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many Thanks to our wonderful Patreons (from http://kgs.link/patreon) who support us every month and made this video possible: BBumbrazz, Sir Harry Farr, Abigail von Kelsch, Szabolcs Dombi, Conner Wilson, Enoch, Moody Bastard, Diego Marcheselli, Paxton LaRiviere, Richard Hagen, Robin Harn, Izzy Crow, Kristy Evangelista, Michael Baker, Tuna The Fish, @charlievankamp, Calvin Black, Justin Fisher, Jan Hübler, Anshul Choudhry, garshtoshteles, Mark Moses, Mau Magaña, seasar2000, Toda, newline, Matt, schubadu, Slumperd, Cracker, Josh Carpenter, Benedikt S., Jeti, Kevin Williams, Enrique Mejia, Juan Carlos Coto Sanchez, Paulmega, Jasmeet Singh, Austin Daily, Andrew Bourgeois, Andrew Dawson, Fin Brewin, Graesha Lizardo, Hagen, Diogo Moreno, Madeline McKinnon, akshay niranjan, The Entity, sontino catalano, Aubrey Temple, Terone, Oleksandr Bolgarov, Jacob Bell, Kyle Harmse, Henry Angulo, Luka Dulčić, mors741, Billyboots75, Joe Bedell, Merasmus 2.0, jimmy davies, PBYuki-Onna, Billy Z Duke