Type of white blood cell. Lymphocytes make up a quarter to a third of the white blood cells. Then there are two types of lymphocytes, B and T cells. The T lymphocytes help the B cells make antibodies as part of the immune response. A cancer of the T lymphocytes is called a T cell lymphoma.
A family of specialized white blood cells that help orchestrate the body's immune responses and attack cells that are infected or cancerous
white blood cells in the lymph nodes that are stimulated by microorganisms or other foreign material in the blood.