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Taf · 13-10-2022, 19:20

How does the immune system ward off attacks by viruses and bacteria that are not yet inside the body?

Many types live on our skin and are ignored. But once they get inside (infect), the war begins, helped by vaccines that have taught the immune system what they look like, act like and what toxins they produce.

13-10-2022, 19:20	#2208
Taf cf.mega poster Join Date: Jun 2003 Location: Kairdiff-by-the-sea Age: 69 Services: TVXL BBXL Superhub 2ac (wired) 1Tb Tivo Posts: 10,223	Re: Coronavirus How does the immune system ward off attacks by viruses and bacteria that are not yet inside the body? Many types live on our skin and are ignored. But once they get inside (infect), the war begins, helped by vaccines that have taught the immune system what they look like, act like and what toxins they produce.