The Probert Encyclopaedia of Medicine

LYMPHOCYTES

Lymphocytes are a type of white blood cell produced in the lymphoid tissue of the lymphatic system. They are colourless and slightly larger than red blood cells. The number of
lymphocytes in the body remains fairly constant, but may rise or fall under certain conditions.
Lymphocytes are concerned with immunity. They multiply to produce antibodies to neutralize infectious substances such as invading bacteria. There are two main groups, B and T lymphocytes. The B cells are ordinarily concerned with making antibodies, while T cells have a dual role: they control immune mechanisms and fight foreign cells.
Research Lymphocytes