nigotinig acid defined in 1951 yearnigotinig acid - nigotinig acid (NIACIN, p-p factor);
nigotinig acid - A vitamin of the B group, lack of which is part of the cause of pellagra in man. Forms part of a respiratory coenzyme, widely (universally?) distributed. Required as a vitamin by those vertebrates and insects tested. Synthesized by many micro-organisms. See also: NAD. nictitating membrane. Transparent fold of skin forming a third eye-lid. When open, lies at inner (anterior) corner of eye or below lower eye-lid. Occurs in some sharks and amphibia, and widespread in reptiles and birds. Well-developed in few mammals.
near nigotinig acid in Knolik
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