AP BIOLOGY

Detailed explanation-1: -Both B and T lymphocytes originate in the bone marrow but only B lymphocytes mature there; T lymphocytes migrate to the thymus to undergo their maturation. Thus B lymphocytes are so-called because they are bone marrow derived, and T lymphocytes because they are thymus derived.

Detailed explanation-2: -B cell or B lymphocyte (bursa-derived cells) is a key player of the adaptive immune response that is responsible for humoral immunity in mammals.

Detailed explanation-3: -The B Cell: B cells mature in the bone marrow or in the lymph node. Bone Marrow: Mature B cells express antibodies on their surface, which are specific for a particular antigen.

Detailed explanation-4: -B cells (sometimes called B-lymphocytes and often named on lab reports as CD19 or CD20 cells) are specialized cells of the immune system whose major function is to produce antibodies (also known as immunoglobulins or gamma-globulins). B cells develop in the bone marrow from stem cells.