B cell

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B cell

1. β cell of pancreas or of anterior lobe of hypophysis;
2. Synonym(s): B lymphocyte
Farlex Partner Medical Dictionary © Farlex 2012

B cell

n.
Any of the lymphocytes that when stimulated by a particular antigen differentiate into plasma cells and that in mammals mature in the bone marrow. Also called B lymphocyte.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

B cell

One of the two major classes of lymphocytes, which comprises 30% of circulating lymphocytes and is concentrated in the follicular zones of lymphoid tissue (in contrast T cells, which are located in the deep cortex). B cells are responsible for antibody production, a transformation evoked by interaction with the appropriate CD4 T-helper cells. Igs are responsible for specific defence against viruses and bacteria, immune surveillance (cytolysis of potentially malignant “self” cells, mediation of antibody-dependent cell cytotoxicity), allergic reactions, formation of antigen-antibody complexes and production of cytokines; surface and cytoplasmic antigens indicate the degree of B-cell maturation and function. Cytoplasmic IgM is present in pre-B cells and surface Ig in mature B lymphoctytes and plasma cells; complement receptors are seen in mature cells. B cell markers include CD9, CD10, CD19, CD20, CD24, Fc receptor, B1, BA-1 and B4 Ia.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

B cell

B lymphocyte Hematology One of the 2 major classes of lymphocytes, which comprises 30% of circulating lymphocytes and is concentrated in the follicular zones of lymphoid tissue–in contrast T cells is located in the deep cortex; B cells are responsible for antibody production, a transformation evoked by interaction with the appropriate CD4 T-helper cells; Igs are responsible for specific defense against viruses and bacteria, immune surveillance–cytolysis of potentially malignant 'self' cells, mediation of antibody-dependent cell cytotoxicity, allergic reactions, formation of antigen-antibody complexes, and production of cytokines; surface and cytoplasmic antigens indicate the degree of B cell maturation and function; cytoplasmic IgM is present in pre-B cells and surface Ig in mature B lymphoctytes and plasma cells; complement receptors are seen in mature cells; B cell 'markers' include CD9, CD10, CD19, CD20, CD24, Fc receptor, B1, BA-1, B4 Ia. See Pan B cell markers, Cf T cells.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

B cell (B lymphocyte)

A type of white blood cell derived from bone marrow. B cells are sometimes called B lymphocytes. They secrete antibody and have a number of other complex functions within the human immune system.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
For example, increased expression of IL-2 and its receptor (IL-2R) and decreased expression of IL-4 and its receptor (IL-4R) were observed in T cells relative to B lymphocytes. These data suggest that chronic moderate exercise in healthy animals primarily enhances the Th1 response phenotype [67].
It was observed that the changes in lymphocyte function were accompanied by a differential effect of moderate exercise on T and B lymphocyte metabolism [67].
Julius says that his earlier experiments looked at the effects of human-and sheep-milk proteins on cultured mouse B lymphocytes, but that current work using human-milk proteins and human cells is showing similar results.
However, in contrast with the other rickettsial diseases that are characterized by perivascular infiltration of T cells and macrophages, with some B lymphocytes and few neutrophils (10,24-26), the cutaneous damage of ATBF show vasculitis with polymorphonuclear leukocyte-rich inflammation.
(5) The immunologic theory is supported by the findings of a predominance of B lymphocytes in a pattern that is similar to that seen in reactive hyperplasia.
While the thymus gland has long been considered the executive director of T-lymphocyte production, B lymphocytes are thought to come from the bone marrow in humans.
The interaction of epithelial cells with T and B lymphocytes induces epithelial cells to differentiate into M cells in vitro (5), indicating the importance of lymphocyte-epithelial cell interactions for maintaining M cells in the follicle-associated epithelium of the Peyers patches (Figure 1).