microbe

And in the 40 trillion microbes treating your guts like an apartment complex as you digest last night’s pizza.

Doctors take feces from a patient with a healthy population of gut microbes, mix it with water, and spray it onto the walls of a sick person’s colon.

Researchers think this is because their blood is packed with peptides, which are like small proteins, many of which can fight microbes and stimulate the Komodo’s immune system.