Fascinating nervous system imaging reveals previously unseen obesity-related nerve damage in mice and humans — and some of it ...

Louse-borne relapsing fever is caused by the spirochete bacterium Borrelia recurrentis, which is transmitted by body lice (not head lice). The disease was first described by Hippocrates (460-370 BC).

Chronic hepatitis B virus (HBV) infection remains a major global health challenge, affecting hundreds of millions of individuals worldwide and representing ...

STOCKHOLM (AP) — Mary E. Brunkow, Fred Ramsdell and Dr. Shimon Sakaguchi won the Nobel Prize in medicine Monday for their discoveries concerning peripheral immune tolerance. Watch the announcement in ...