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B-cell receptor.

B-cell receptor.
B-cell receptor.

The B-cell receptor consists of an Ig molecule anchored to the cell’s surface. CH = heavy chain constant region; CL = light chain constant region; Fab = antigen-binding fragment; Fc = crystallizable fragment; Ig = immunoglobulin; L-kappa (κ) or lambda (λ) = 2 types of light chains; VH = heavy chain variable region; VL = light chain variable region.