pubmed:abstractText |
Isotachysterol(3), 25-hydroxyisotachysterol(3), and isovitamin D(3) have been synthesized and tested for biological activity. Like 1,25-dihydroxyvitamin D(3), isotachysterol(3) stimulates intestinal calcium transport and bone calcium mobilization in anephric rats, whereas 25-hydroxyvitamin D(3) does not. Although isovitamin D(3) is biologically active in normal rats it is inactive in anephric rats.
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