Synthesis of 25-Hydroxyvitamin D3-26,23-Lactone but not 24,25-Dihydroxyvitamin D3 from 25-Hydroxyvitamin D3 in Opossum Kidney Cells Treated with 1α,25-Dihydroxyvitamin D3 - Horiuchi, N; Saikatsu, S; Akeno, N; Abe, M; Kimura, S; Yamada, S (Hormone and Metabolic Research, 1995)