NCIt synonyms : B Lymphocyte Differentiation; B-Cell Development; B Cell Differentiation;
NCIt definition : In mammalian bone marrow, B-Cell Development consists of progressive differentiation
from CD34 progenitor cells to plasma and memory B cells by positive/negative selection
in response to local signals, including antigens and cytokines. B cell development
begins with immunoglobulin gene somatic recombination and pre-B cell receptor expression.
Antigen-induced signal transduction via BCR-associated ITAM molecules activates B
cell proliferation. Further differentiation involves additional immunoglobulin gene
recombination and expression. Antigen-stimulated circulating (resting) B cells proliferate
and differentiate into plasma and memory B cell clones expressing immunoglobulins
with the same antigen recognition site.;