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 ...

The human body is an amazing thing. For each one of us, it’s the most intimate object we know. And yet most of us don’t know enough about it: its features, functions, quirks, and mysteries. Our series ...

Malaria, a disease caused mainly by the parasites Plasmodium falciparum and Plasmodium vivax, is associated with over 400,000 deaths each year. Previously, the spleen was assumed to mostly play a role ...

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 ...

Splenomegaly is one of the characteristic signs of an overactive spleen. It can cause platelets to pool inside of your spleen and cause thrombocytopenia. Thrombocytopenia is when you have a low ...

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 ...