B cell

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B cell

n.
Any of a class of lymphocytes that, when activated by a specific antigen and usually also by helper T cells, proliferate and differentiate into antibody-secreting plasma cells or memory cells. In mammals, B cells mature in the bone marrow. Also called B lymphocyte.

[b(ursa-dependent) cell, after the bursa of Fabricius, a gland in birds where the cells mature and the first such tissue found in vertebrates.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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.
[1970–75]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

B cell

Any of the lymphocytes that develop into plasma cells in the presence of a specific antigen, such as a bacterium or virus. The plasma cells then produce antibodies that attack or neutralize the antigen. B cells mature in the bone marrow before being released into the blood. See Note at antibody.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.B cell - a lymphocyte derived from bone marrow that provides humoral immunityB cell - 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
lymph cell, lymphocyte - an agranulocytic leukocyte that normally makes up a quarter of the white blood cell count but increases in the presence of infection
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
We aimed to characterize the phenotype and frequency of B-lymphocyte subsets and their relationship with metabolic factors and disease status.
Mean counts and percentages of all T- and B-lymphocyte subsets increased after 3 days of illness compared with results obtained during the first 3 days of illness (Figure 1).
This subset may represent naive (pre-germinal center) B cells or T cell-independent memory B Cells.[2,6] These previously published findings suggest that nodal MZL is a monoclonal proliferation of neoplastic cells, which may potentially originate from any of these marginal zone B-lymphocyte subsets. No cases of biclonal or oligoclonal nodal MZL have been reported to our knowledge.