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 antibody and a clone of memory cells that make the antibody on subsequent encounters.
also called beta cell. a cell in the islet of langerhans that produces and secretes insulin.
b cell n.
see beta cell.
a type of lymphocyte that, when stimulated by a particular antigen, differentiates into plasma cells that synthesize the antibodies that circulate in the blood and react with the specific antigens. also called b lymphocyte.
any of the lymphocytes that develop into plasma cells in the presence of a specific antigen. the plasma cells produce antibodies that attack or neutralize the antigen in what is called the humoral immune response. b cells mature in the bone marrow before being released into the blood. also called b lymphocyte. compare t cell.
benvenuto [ben-vuh-noo-toh,, -nyoo-;; italian ben-ve-noo-taw] /ˌbɛn vəˈnu toʊ,, -ˈnyu-;; italian ˌbɛn vɛˈnu tɔ/ (show ipa), 1500–71, italian, metalsmith, sculptor, and autobiographer. contemporary examples before cellini, memoirists tended to restrict themselves to professional accomplishments and philosophy. the first celebrity tell-all nathaniel rich september 21, 2010 there is no shortage of boasting in autobiography, but cellini is […]
- B chain
b chain b chain n. a polypeptide component of insulin containing 30 amino acids, the composition of which is species-specific.
- B chromosome
a type of densely staining chromosome of uncertain biological function, found in many plant and animal species.
- Bertha m clay
bertha m (charlotte monica braeme) 1836–84, english author: originator of a long series of romantic novels. c-ssius marcellus, 1810–1903, u.s. antislavery leader and diplomat. c-ssius marcellus, jr. original name of muhammad ali. henry, 1777–1852, u.s. statesman and orator. lucius (dubignon) [doo-bin-yon] /ˌdu bɪnˈyɒn/ (show ipa), 1897–1978, u.s. general. a male given name. noun a very […]
- B complex
vitamin b complex. noun short for vitamin b complex b complex n. see vitamin b complex. b complex see vitamin b complex.