CD8+ T cells - known as "killer" T cells - are the assassins of the immune system. Once they are primed, they seek out and destroy other cells that are infected with virus or cells that are cancerous.

Priming involves dendritic cells — sentinels of the immune system. In an influenza infection in the lungs, for example, lung-migratory dendritic cells capture a piece of the viral antigen, and then ...

*Refers to the latest 2 years of stltoday.com stories. Cancel anytime. Dear Dr. Donohue • When I was 22, I rode a motorcycle all the time. I got into a bad accident on an interstate highway and was ...

Memory T cells are a special type of white blood cell that "remember" past infections and vaccines, helping our bodies to ...

The spleen is one of the organs we can live without, but researchers are increasingly recognizing its importance. We know the spleen helps remove old cells from the blood, and it has an important role ...

Presyncope coupled with an enlarged spleen suggests infection A 69-year-old woman presents with night sweats, dizziness, fatigue and chronic pain in the upper abdomen. Mrs. C is a 69-year-old white ...

Infection by live attenuated retroviruses provides excellent protection from challenge with pathogenic viruses in several animal models, but little is known about which immune effectors are necessary ...

CD8+ T cells -- known as "killer" T cells -- are the assassins of the immune system. Once they are primed, they seek out and destroy other cells that are infected with virus or cells that are ...

Given the patient’s abdominal pain, she was evaluated sonographically as well. It was normal except for a 2-cm ovoid soft-tissue nodule anterior to the head of the pancreas. Thereafter, she was sent ...