we compared the effects of four vitamin d metabolites , 1 alpha,25 dihydroxy vitamin d3 ( 1 alpha,25 ( oh ) 2d3 ) , 1 alpha hydroxy vitamin d3 ( 1 alpha oh d3 ) , 25 hydroxy vitamin d3 ( 25 oh d3 ) , and 24r,25 dihydroxy vitamin d ( 24r,25 ( oh ) sd3 ) on resorption and collagen synthesis in fetal rat bone maintained in organ culture .
C0006657
25
C2713074
25 oh d3