title: Structure-activity relationships of vitamin D analogues.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D002645:Chickens; D002762:Cholecalciferol / Q000378:metabolism; D006801:Humans; D013329:Structure-Activity Relationship; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology*; D014808:Vitamin D Deficiency / Q000378:metabolism
chemical_list: D014807:Vitamin D; D002762:Cholecalciferol; D002118:Calcium