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YouTubeKurzgesagt – In a Nutshell
The Immune System Explained I – Bacteria Infection
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 ...
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