the role of vitamin d metabolites in the regulation of hepatic 25-hydroxyvitamin d production was investigated by examining the effects of 25-hydroxyvitamin d , 1,25-dihydroxyvitamin d , and 24,25-dihydroxyvitamin d on the synthesis of [ 25-3h ] hydroxyvitamin d by rachitic rat liver homogenates .
C0012328
dihydroxyvitamin d
C0020337
hydroxyvitamin d