title: SECRETION AND EXCRETION OF CALCIUM BY THE HUMAN GASTROINTESTINAL TRACT.
mesh_terms: D001774:Blood Chemical Analysis; D002118:Calcium / Q000378:metabolism*; D002136:Calcium, Dietary; D005243:Feces; D041981:Gastrointestinal Tract; D006801:Humans; D007408:Intestinal Absorption; D008660:Metabolism; D014556:Urine
chemical_list: D002136:Calcium, Dietary; D002118:Calcium
keywords: BLOOD CHEMICAL ANALYSIS; CALCIUM METABOLISM; FECES; GASTROINTESTINAL SYSTEM; INTESTINAL ABSORPTION; METABOLISM; URINE