we examined effects of magnesium deprivation on circulating 1,25 ( oh ) 2d levels before and after a loading dose of 25-hydroxyvitamin d3 [ 25 ( oh ) d3 ] , on in vivo conversion of small doses of radiolabeled 25 ( oh ) d3 to 1,25 ( oh ) 2d3 in intact rats , and on in vitro 25-hydroxyvitamin d-1 alpha-hydroxylase ( 1 alpha-hydroxylase ) activity in rat renal mitochondria .
C0006657
25-hydroxyvitamin d3
C2713074
25 ( oh ) d3