Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone. PTH is secreted by the parathyroid glands in the neck. It acts to regulate the concentration of calcium and phosphorus in the blood. Stock Image

Stock Image - Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone. PTH is secreted by the parathyroid glands in the neck. It acts to regulate the concentration of calcium and phosphorus in the blood.. Fotosearch

Parathyroid hormone molecule. Computer model showing the structure of parathyroid hormone (PTH), or parathormone. PTH is secreted by the parathyroid glands in the neck. It acts to regulate the concentration of calcium and phosphorus in the blood.

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