vitamin precursor
1vitamin K — n. a fat soluble vitamin, synthesized constantly by intestinal bacteria in mammals and occurring in certain green vegetables, fish meal, etc., that promotes blood clotting and is required for the synthesis of prothrombin by the liver: the two… …
2Vitamin K — has also been used as a slang term for ketamine, an unrelated anaesthetic. Vitamin K1 (phylloquinone). Both forms of the vitamin contain a functional naphthoquinone ring and an aliphatic side chain. Phylloquinone has a phytyl side chain …
3Vitamin D — is a group of fat soluble prohormones, the two major forms of which are vitamin D2 (or ergocalciferol) and vitamin D3 (or cholecalciferol).cite web|url=http://dietary supplements.info.nih.gov/factsheets/vitamind.asp|title=Dietary Supplement Fact… …
4Vitamin K — One of two naturally occurring fat soluble vitamins (vitamin K1 and vitamin K2) needed for the clotting of blood because of an essential role in the production of prothrombin (a clotting factor). The term vitamin A may also refer to a synthetic… …
5Precursor — Forerunner. That which precedes or is derived from an available source. The term precursor is applied to an inactive substance converted to an active one (such as an enzyme, vitamin, or hormone). The term precursor applies to any chemical that is …
6mir-17 microRNA precursor family — Predicted secondary structure and sequence conservation of mir 17 Identifiers Symbol mir 17 Rfam …
7Menadione — Menadione[1] …
8provitamin — noun vitamin precursor; a substance that is converted into a vitamin in animal tissues • Hypernyms: ↑hydrocarbon • Hyponyms: ↑provitamin A, ↑carotene, ↑carotin …
9endocrine system, human — ▪ anatomy Introduction group of ductless glands (gland) that regulate body processes by secreting chemical substances called hormones (hormone). Hormones act on nearby tissues or are carried in the bloodstream to act on specific target organs… …
10Choline — The N,N,N trimethylethanolammonium cation, with an undefined counteranion, X− Choline is a water soluble essential nutrient.[1][ …
