B cell
noun Etymology: B probably from bursa-derived (produced by the bursa of Fabricius Date: 1968 any of the lymphocytes that have antigen-binding antibody molecules on the surface, that comprise the antibody-secreting plasma cells when mature, and that in mammals differentiate in the bone marrow — called also B lymphocytecompare T cell

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • B cell — B cells are lymphocytes that play a large role in the humoral immune response (as opposed to the cell mediated immune response, which is governed by T cells). The principal functions of B cells are to make antibodies against antigens, perform the …   Wikipedia

  • B-cell — B cell, or B cell «BEE SEHL», noun. a type of lymphocyte that produces antibodies, characterized by many fingerlike protrusions on its surface: »Both the B cells and T cells recirculate through the body and continually monitor for the presence of …   Useful english dictionary

  • B cell — n. [< b(ursa of Fabricius), a structure in birds analogous to the human thymus] any of the lymphocytes not derived from the thymus, that mature in the bone marrow and help to build antibodies: cf. T CELL …   English World dictionary

  • B cell — noun a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens • Syn: ↑B lymphocyte • …   Useful english dictionary

  • B cell — A type of white blood cell and, specifically, a type of lymphocyte. Many B cells mature into what are called plasma cells that produce antibodies (proteins) necessary to fight off infections while other B cells mature into memory B cells. All of… …   Medical dictionary

  • B cell — Biol. 1. Also called B lymphocyte. a type of lymphocyte, developed in bone marrow, that circulates in the blood and lymph and, upon encountering a particular foreign antigen, differentiates into a clone of plasma cells that secrete a specific… …   Universalium

  • B-cell — (also known as a B lymphocyte) A type of lymphocyte derived from bone marrow stem cells that matures into an immunologically competent cell under the influence of the bursa of Fabricius in the chicken and bone marrow in nonavian species.… …   Dictionary of microbiology

  • B cell — n. 1) Also called B lymphocyte a type of white blood cell that circulates in the blood and lymph and produces antibody upon encountering any antigen that has a molecular arrangement complementary to the antibody. 2) bio beta cell • Etymology:… …   From formal English to slang

  • B cell — A white blood cell that comes from bone marrow. As part of the immune system, B cells make antibodies and help fight infections. Also called B lymphocyte …   English dictionary of cancer terms

  • B cell — beta cell, cell in the pancreatic islets which produces and secretes insulin (Physiology); type of lymphocyte produced in the bone marrow, precursor of antibody producing plasma cells (Immunology) …   English contemporary dictionary

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