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| Vitamin B 12 Cobalamin | Cyanocobalamin | Cobalamins | Eritron | Vitamin B12 | B 12, Vitamin | B12, Vitamin A cobalt-containing coordination compound produced by intestinal micro-organisms and found also in soil and water. Higher plants do not concentrate vitamin B 12 from the soil and so are a poor source of the substance as compared with animal tissues. | |
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