B cell

(redirected from B lymphocytes)
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Synonyms for B cell

a lymphocyte derived from bone marrow that provides humoral immunity

References in periodicals archive ?
Their activation is triggered by the encounter of an antigen-presenting cell, like a dendritic cell or a B lymphocyte. In humans, lymphocytes are activated when they encounter a plasmacytoid dendritic cell and acquire a LAG-3+[FoxP3.sup.+][CTLA-4.sup.+] phenotype.
Regarding the proliferative index of lymphocytes, our results demonstrated that participation in very intense exercise protocols, an Olympic triathlon (swimming for 1.5 km, cycling for 40 km, and running for 10 km) [49, 50] or a simulated cycling competition (6 sets of 20 minutes at 90% of the individual's anaerobic threshold) [51] reduced the proliferative indices of T and B lymphocytes and plasma glutamine levels.
In addition to stimulating B lymphocytes, Th2 cells suppress the cytotoxic T lymphocyte response, decreasing the robustness of cell-mediated immunity.
Humoral: part of the immune response that involves antibodies secreted by B lymphocytes (see below) and circulating in body fluids such as blood or lymph.
These T lymphocytes activate and release messenger substances (cytokines) that increase the immune response and stimulate the production of antibodies by B lymphocytes. Other types of T lymphocytes have a direct cytotoxic action on cells presenting parasite fragments, thus completing the immune response.
Bristol-Myers Squibb Company (Princeton, NJ) has patented antibody heteroconjugates and bispecific antibodies and methods and compositions and their use in the enhancement or inhibition of activation and function of T or B lymphocytes. The heteroconjugates are comprised of at least two antibody molecules cross-linked to each other, each molecule being reactive with a different lymphocyte antigen on the same cell.
The as-yet-unidentified protein or proteins speed the maturation of cultured B lymphocytes (a type of white blood cell) and prime them for production of antibodies, says Michael H.
The evaluation of the proportion of polymorphonuclear leukocytes, macrophages, T lymphocytes, and B lymphocytes, as well the relative proportion of neovascularization in skin tissue specimens, was determined by quantitative image analysis (22).