Calcium Metabolism . PTH, 1,25-vitamin D (calcitriol), calcitonin; parathyroid, C-cells of thyroid; more
Calcium Metabolism . PTH, 1,25-vitamin D (calcitriol), calcitonin; parathyroid, C-cells of thyroid; bone, small intestine, kidney; PO intake 0.4-1.5g/d, excretion in feces less
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