title: The urological problems in space flight.
mesh_terms: D000818:Animals; D002118:Calcium / Q000652:urine; D000882:Haplorhini; D007103:Immobilization; D008297:Male; D051381:Rats; D013026:Space Flight; D013091:Spermatogenesis; D013094:Spermatozoa; D014546:Urinary Catheterization; D014555:Urination Disorders / Q000209:etiology*; D014570:Urologic Diseases / Q000209:etiology*
chemical_list: D002118:Calcium