. "DeLuca HF"^^ . "Chen KS"^^ . "Prahl JM"^^ . "PubMed"^^ . "8506296"^^ . "Proc Natl Acad Sci U S A 90(10);4543-7"^^ . "Isolation and expression of human 1,25-dihydroxyvitamin D3 24-hydroxylase cDNA."^^ . "1993"^^ . . . . . .