Barr virus—but new research reveals how it can hijack immune cells, sparking a chronic disease that attacks the body from ...

Scientists have extracted the oldest RNA molecules out of a woolly mammoth, gaining a snapshot into the processes at work in the extinct mammal's body just before it died.

Viruses are tiny — and sneaky. So sneaky that some play a deadly game of hide and seek. The "seek" part is all too familiar: They're always looking for ways to infect humans. Their ability to hide is ...

Human astroviruses are a leading viral cause of the stomach bug-think vomiting, diarrhea, and fever. It often impacts young children and older adults, leading to vicious cycles of sickness and ...

Why do immune cells that are supposed to eliminate viruses suddenly turn against our own body? There are instances where killer T cells—which are meant to precisely remove virus-infected ...