Why does the same virus barely faze one person while sending another to the hospital? New research shows the answer lies in a molecular record etched into our immune cells by both our genes and our ...

A 76-year-old woman, who had a history of treated hepatitis C virus infection, presented with rapidly progressive kidney failure and a stroke. Palpable purpura on the legs was noted. A diagnosis ...

Dozens of new discoveries reveal that defenses evolved by bacteria and viruses billions of years ago still define our own innate immune system. Evolutionary arms races — where one species is pitted ...

Immune cells that help to fight off foreign invaders in the body also provide crucial support for muscles during exercise, suggests a mouse study published in Cell on 17 April 1. B cells are the ...