Article
B1 and B2 cells differ in their potential to switch immunoglobulin isotype
1 Dec 1995
Abstract excerpt
The ability of purified B1a (Ly-1 B) and B2 cells to switch immunoglobulin isotype was assessed by limiting dilution analysis in two in vitro culture systems. When stimulated in the presence of interleukins-4 and -5 by either lipopolysaccharide or CD40 ligand, the frequency of IgG1 precursors in the B1a population was at most one third that of IgM precursors. In B2 cells, however, the frequency of IgG1 precursors...
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