[Proceedings: Synthesis of activated vitamin D and its regulation in the kidney. 1. 2 stage regulatory mechanism].
D000818:Animals; D002116:Calcitonin / Q000502:physiology; D002645:Chickens; D007668:Kidney / Q000378:metabolism*; D008928:Mitochondria / Q000378:metabolism; D010281:Parathyroid Hormone / Q000502:physiology; D014807:Vitamin D / Q000096:biosynthesis*
D010281:Parathyroid Hormone; D014807:Vitamin D; D002116:Calcitonin