The immune system's B cells create antibodies that can mount a response against just about anything—either destroying a ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

How does the same infection, say the flu or a cold, give some people mild symptoms and leave others suffering? Why do people develop autoimmune diseases? And will we ever be able to predict when—and ...

Mary E. Brunkow, Fred Ramsdell and Dr. Shimon Sakaguchi won the Nobel Prize in medicine on Monday for their discoveries concerning peripheral immune tolerance. Brunkow, 64, is a senior program manager ...

Sat, January 24, 2026 at 2:56 PM UTC The immune system is the body’s natural defense network that helps to keep you healthy from things like bacteria, viruses, and parasites. It’s a complex network of ...

Dozens of new discoveries reveal that defenses evolved by bacteria and viruses billions of years ago still define our own ...

It's quick and easy to access Live Science Plus, simply enter your email below. We'll send you a confirmation and sign you up for our daily newsletter, keeping you up to date with the latest science ...

“I would venture to say that bacteria and archaea use everything that you can imagine for the purpose of defence — and then, some that you cannot,” said Eugene Koonin, an evolutionary biologist at the ...