What are B-Lymphocytes?
The action of B-cells ————————————–… A type of lymphocyte (which, in turn is a type of white blood cell) that is the basis for the body’s humoral immune system since it produces and secretes immunoglobulins (antibodies) in response to antigens. B-lymphocytes, also called B-cells, represent about 5–15% of the circulating lymphoid pool and are classically defined by the presence of endogenously produced immunoglobulins. Like all blood cells, B-lymphocytes develop in the bone marrow and then migrate to any of various parts of the body via the bloodstream. When an antigen (a particular foreign protein, such as a substance on the surface of a bacterium) is encountered by the immune system, certain B-lymphocytes are stimulated to enlarge and undergo cell division, transforming into cells called plasma cells. The plasma cells secrete into the blood vast numbers of tailor-made immunoglobulins that attach to the antigen on the surface of the microorganism. Disorders con
