title: The transformation of a vitamin into a hormone: the vitamin D story.
mesh_terms: D000818:Animals; D003094:Collagen / Q000378:metabolism; D005260:Female; D006728:Hormones / Q000502:physiology*; D006801:Humans; D012098:Reproduction; D012279:Rickets / Q000209:etiology; D012867:Skin / Q000378:metabolism*; D014807:Vitamin D / Q000378:metabolism*
chemical_list: D006728:Hormones; D014807:Vitamin D; D003094:Collagen