"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." The human immune system is a remarkable evolutionary tool that is often taken for granted—until, that is, ...

Subscribe to our newsletter for the latest sci-tech news updates. Imagine a high-tech security system, constantly scanning for intruders, identifying threats, calling for backup, neutralizing them, ...

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 ...

Scientists have made a discovery that helps explain why humans and animals are so susceptible to contracting tuberculosis(TB) – and it involves the bacteria harnessing part of the immune system meant ...