Calcium.
D000596:Amino Acids / Q000494:pharmacology; D000818:Animals; D001692:Biological Transport; D002118:Calcium / Q000378:metabolism*; D002132:Calcium Radioisotopes; D002241:Carbohydrates / Q000494:pharmacology; D002417:Cattle; D002482:Cellulose / Q000494:pharmacology; D005260:Female; D006728:Hormones / Q000494:pharmacology; D006801:Humans; D007223:Infant; D007408:Intestinal Absorption / Q000187:drug effects; D007421:Intestine, Small / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism; D007668:Kidney / Q000378:metabolism; D007674:Kidney Diseases / Q000378:metabolism; D007785:Lactose / Q000494:pharmacology; D008274:Magnesium / Q000494:pharmacology; D008286:Malabsorption Syndromes / Q000378:metabolism; D008892:Milk; D009943:Organophosphorus Compounds / Q000494:pharmacology; D010281:Parathyroid Hormone / Q000494:pharmacology; D011247:Pregnancy; D013501:Surface-Active Agents / Q000494:pharmacology; D014807:Vitamin D / Q000494:pharmacology
D000596:Amino Acids; D002132:Calcium Radioisotopes; D002241:Carbohydrates; D006728:Hormones; D009943:Organophosphorus Compounds; D010281:Parathyroid Hormone; D013501:Surface-Active Agents; D014807:Vitamin D; D002482:Cellulose; D008274:Magnesium; D007785:Lactose; D002118:Calcium