单词	nicotinic acid
释义	nicotinic acid /nɪkəˈtɪnɪk / noun [mass noun] Biochemistry A vitamin of the B complex which is widely distributed in foods such as milk, wheat germ, and meat, and can be synthesized in the body from tryptophan. Its deficiency causes pellagra. Also called niacin. Alternative name: 3-pyridinecarboxylic acid; chemical formula: (C5H4N)COOH. Thus, the enzymes nicotinic acid mononucleotide adenylyltransferase and NAD synthetase are essential for growth of E. coli (coded for by the genes nadD and nadE, respectively).... Blood levels of pantothenic acid were significantly higher in CD patients, and there were no statistically significant differences in levels of vitamins B12 and C, nicotinic acid, and biotin. Because of its ability to cause large reductions in circulating levels of cholesterol, nicotinic acid is used to treat Type II, III, IV and V hyperlipoproteinemias.
随便看	horizontal stabilizer Horkheimer, Max Horlicks Horlivka hormesis hormonal hormonally hormonal replacement hormone hormone replacement hormone replacement therapy hormone therapy hormone treatment Hormuz Hormuz, Strait of horn hornbag hornbeam hornbill hornblende hornbook Horn, Cape horndog horned horned grebe

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。