When a patient enters the emergency department in critical condition, doctors must quickly run through a crucial list of questions: Does the patient have an infection? If so, is it bacterial or viral?

It starts with a sneeze. Someone on the subway didn't cover their mouth and now a cloud of invisible invaders hangs in the air. Before you even step off the train, your immune system has already begun ...

Researchers have uncovered how hormones profoundly affect our immune systems, explaining why men and women are affected by diseases differently. Scientists from the Karolinska Institutet in Sweden and ...

NEW YORK, May 23 (UPI) --It may not be the mythical fountain of youth, but the strength of the body's immune system could hold the key to a healthy, long life, experts told UPI. The concept of ...

Rochester, Minn. — The immune system is meant to protect the body from infection and disease. But with age, it can become less capable of doing so. However, Mayo Clinic researchers have found that ...

To our immune system, naked RNA is a sign of a viral or bacterial invasion and must be attacked. But our own cells also have RNA. To ward off trouble, our cells clothe their RNA in sugars, Vijay ...

Researchers have discovered the “fountain of youth” for cells - but it comes with a big cost. Some people over 60 years old were found to have immune systems that appear to be much younger in wear-and ...

Researchers found that missing a single night of sleep can quickly affect key parts of the immune system. The study found important immune cells became overactive after sleep loss. Researchers say ...