Our immune system is armed with an array of defenses designed to detect and eliminate harmful threats. One of its most powerful defense mechanisms is the complement system—a group of proteins that ...

In the Mexican series Prison Cell 211, as a lawyer gets stuck in a prison riot, it’s hard to defend anyone when you’re the ...

By age 75, a noteworthy 50% of men develop an inguinal (groin) hernia—a bulge that results from soft tissue pushing through a ...

One reason that tonsils may grow back is that one of the operations to remove them is a partial tonsillectomy. Only removing ...