Immuno-oncology is an evolving field of study on the role of the immune system in cancer initiation and growth. This introductory module describes the purpose of the human immune system, components of ...

Lymphocytes are types of white blood cells important for fighting off infection and destroying cancer cells inside your body. There are three types of lymphocytes: Do you know the best thing about ...

CD4+ T cells, or helper T cells, are one type of lymphocyte that helps coordinate the immune response against infection and disease. They interact and activate other cells in the immune system. The ...

The human body’s defensive lineup is impressive—from made-to-order antibodies to natural-born killers. Here’s how it wards off sickness in every season. When pathogens invade our bodies—in the form of ...