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- n. A lymphocyte, developed in the bursa of birds and the bone marrow of other animals, that produces antibodies and is responsible for the immune system.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a lymphocyte derived from bone marrow that provides humoral immunity; it recognizes free antigen molecules in solution and matures into plasma cells that secrete immunoglobulin (antibodies) that inactivate the antigens
From b(ursa) + cell. (Wiktionary)
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