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vitamin B12

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(redirected from cobalamin, cyanocobalamin)

vitamin B12

[′vīd·ə·mən ¦bē¦twelv]
(biochemistry)
A group of closely related polypyrrole compounds containing trivalent cobalt; the antipernicious anemia factor, essential for normal hemopoiesis. Also known as cobalamin; cyanocobalamin; extrinsic factor.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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