the effects of three vitamin d3 metabolites , 25-hydroxyvitamin d3 ( 25- ( oh ) d3 ) , 1 alpha,25-dihydroxyvitamin d3 ( 1 alpha , 25- ( oh ) 2d3 ) , and 24r,25-dihydroxyvitamin d3 ( 24r,25- ( oh ) 2d3 ) on the activity of alkaline phosphatase ( ap ) , a key enzyme involved in biomineralization , have been studied in primary cultures of chicken epiphyseal growth plate chondrocytes .
C0006657
25-hydroxyvitamin d3
C2713074
25