How the Immune System Deals with the Gut's Plethora of Microbes

Rockefeller University

The gut is an unusually noisy place, where hundreds of species of bacteria live alongside whatever microbes happen to have hitched a ride in on your lunch. Scientists have long suspected that the gut’s immune system, in the face of so many stimuli, takes an uncharacteristically blunt approach to population control and protection from foreign invaders—churning out non-specific antibodies with broad mandates to mow the gut’s entire microbial lawn without prejudice.

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