ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
White blood cells. Computer artwork of B lymphocytes, or B cells, each containing an antibody molecule. B cells mature in the bone marrow and are responsible for humoral immunity; they operate by recognising specific sites on the surface of a pathogen or foreign object (antigen), which they bind to before producing antibodies to destroy the antigen.
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