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25-Hydroxyvitamin D2 D2 the intermediates of 25-Hydroxyvitamin D2
25 hydroxyvitamin D is the main form of vitamin D in the body.Vitamin D is a steroid derivative and a fat - soluble vitamin.Vitamin D is made mainly by exposing the skin to ultraviolet light and is taken in small amounts from food or supplements.Vitamin D not only affects the metabolism of calcium and phosphorus, but also has a wide range of physiological effects. It is an essential substance to maintain human health, cell growth and development, and is closely related to a variety of diseases.There are two forms of vitamin D in the body, vitamin D3 (cholecalciferol) and vitamin D2 (ergocalciferol). Vitamin D is hydroxylated in the liver to 25-hydroxyl vitamin D (25-oh-vd) and converted to the active 1, 25-dihydroxyl vitamin D in the kidney.
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