Treatment of RWLeu-4 cells with VD3 induced 24R-hydroxylase activity , a marker of vitamin D3 responsiveness in many tissues .
treatment of rwleu-4 cells with vd3 induced 24r-hydroxylase activity , a marker of vitamin d3 responsiveness in many tissues .
O O B-cell_line I-cell_line O B-lipid O B-protein_molecule O O O O O B-lipid I-lipid O O O O O