Your immune system harbors a lifetime's worth of information about threats it's encountered - a biological Rolodex of baddies. Often the perpetrators are viruses and bacteria you've conquered; others ...

How people with compromised immune systems respond to vaccines is an important area of immunological research. A new study led by York University found that not only could machine-learning models ...

Most cells evolve slowly, accumulating incremental changes that better suit their environments. Immune cells, because they must adapt rapidly to counter new threats, evolve much more quickly. Part of ...

The average human has about 1.8 trillion immune cells. These cells patrol the body for bacteria, viruses, cancers, and other threats. Vaccines enhance this security system by teaching our immune cells ...

Simply the smell of seafood can make those with an allergy to it violently ill — and therefore more likely to avoid it. The same avoidance behavior is exhibited by people who develop food poisoning ...