a填寫表格 Filling in form[translate] apls close cover couer open pls关闭盖子couer开放[translate] awarning of judgment of full power 警告评断全能力[translate] a他很亲切 He is very kind[translate] aI have cities but no houses;forests but no tress;rivers without water.What am I? 我没有城市...
The biologically active form is generated by a further hydroxylation step, resulting in 1,25-dihydroxycholecalciferol (1,25(OH)2D3, also called calcitriol). Early investigations assumed that this transformation takes place mainly in the kidney. Figure 1. Metabolic pathway of vitamin D3: The ...