Magnesium, the mimic/antagonist of calcium.
D001667:Binding, Competitive; D002118:Calcium / Q000037:antagonists & inhibitors* / Q000378:metabolism; D006801:Humans; D008274:Magnesium / Q000378:metabolism*; D010281:Parathyroid Hormone / Q000502:physiology
D010281:Parathyroid Hormone; D008274:Magnesium; D002118:Calcium