The calcium metabolism problem in space medical science.
D015502:Absorptiometry, Photon; D001862:Bone Resorption / Q000000981:diagnostic imaging / Q000209:etiology; D001842:Bone and Bones / Q000000981:diagnostic imaging / Q000378:metabolism*; D002118:Calcium / Q000378:metabolism* / Q000502:physiology; D002128:Calcium Metabolism Disorders / Q000000981:diagnostic imaging; D006706:Homeostasis; D006801:Humans; D007408:Intestinal Absorption; D008297:Male; D010024:Osteoporosis / Q000000981:diagnostic imaging / Q000209:etiology; D010281:Parathyroid Hormone / Q000502:physiology; D013026:Space Flight; D014893:Weightlessness
D010281:Parathyroid Hormone; D002118:Calcium