
| a deep-red crystalline, water-soluble solid, C63H88N14O14PCo, obtained from liver, milk, eggs, fish, oysters, and clams: a deficiency causes pernicious anemia and disorders of the nervous system. |
| extrinsic factor n. See vitamin B12. |
| vitamin B12 n. A complex compound containing cobalt, found especially in liver and widely used to treat pernicious anemia. Also called cobalamin, cyanocobalamin, extrinsic factor. |
extrinsic factor n.
See vitamin B12.