7 alpha-hydroxylation of 26-hydroxycholesterol, 3 beta-hydroxy-5-cholestenoic acid and 3 beta-hydroxy-5-cholenoic acid by cytochrome P-450 in pig liver microsomes. FEBS Lett. 1992 Jan 13; 296 (1):73–76.Toll, A., J. Shoda, M. Axelson, J. Sjovall, and K. Wikvall. 1992.7␣-...