title: Vitamin D 3 -25-hydroxylase: tissue occurrence and apparent lack of regulation.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D002645:Chickens; D002762:Cholecalciferol / Q000378:metabolism*; D002845:Chromatography; D004032:Diet; D004100:Dihydroxycholecalciferols; D066298:In Vitro Techniques; D007422:Intestines / Q000201:enzymology; D007668:Kidney / Q000201:enzymology; D007700:Kinetics; D008099:Liver / Q000201:enzymology; D008297:Male; D006899:Mixed Function Oxygenases / Q000378:metabolism*; D012279:Rickets / Q000201:enzymology; D012822:Silicon Dioxide; D014316:Tritium; D014808:Vitamin D Deficiency / Q000201:enzymology
chemical_list: D002247:Carbon Isotopes; D004100:Dihydroxycholecalciferols; D014316:Tritium; D002762:Cholecalciferol; D012822:Silicon Dioxide; D006899:Mixed Function Oxygenases