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RE: The Innate Immune System (1/2) - A Zoo of Cells

in #science7 years ago

Excellent article. The immune system has far more pieces and parts than I ever realized. I'm just sitting here wondering about two things: (1) how such a complex system of mutually reinforcing elements evolved, and (2) how such a complex system magically grows from an embryo based on a little bit of DNA encoding.