cells were obtained from the epiphyseal growth plate of rachitic chicks and were exposed to physiological and pharmacological concentrations of three metabolites of vitamin d3 , 25 hydroxyvitamin d3 ( 25 ( oh ) d3 ) , 24,25-dihydroxyvitamin d3 ( 24,25 ( oh ) 2d3 ) and 1,25-dihydroxyvitamin d3 ( 1,25 ( oh ) 2d3 ) .
C0006657
25 hydroxyvitamin d3
C2713074
25 ( oh ) d3