title: Failure of formation of 1,25-dihydroxycholecalciferol in chronic renal insufficiency.
mesh_terms: D002118:Calcium / Q000378:metabolism; D002247:Carbon Isotopes; D002762:Cholecalciferol / Q000378:metabolism*; D002845:Chromatography; D012080:Chronic Kidney Disease-Mineral and Bone Disorder / Q000378:metabolism*; D004100:Dihydroxycholecalciferols / Q000096:biosynthesis; D006801:Humans; D006887:Hydroxycholecalciferols / Q000096:biosynthesis*; D007408:Intestinal Absorption; D007668:Kidney / Q000378:metabolism*; D007676:Kidney Failure, Chronic / Q000150:complications / Q000378:metabolism*; D010018:Osteomalacia / Q000209:etiology; D014316:Tritium; D014808:Vitamin D Deficiency / Q000150:complications*
chemical_list: D002247:Carbon Isotopes; D004100:Dihydroxycholecalciferols; D006887:Hydroxycholecalciferols; D014316:Tritium; D002762:Cholecalciferol; D002118:Calcium