The Calcitonin reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Calcitonin

Calcitonin is a hormone which participates in calcium and phosphorus metabolism. Specifically, it reduces blood calcium levels in three ways; decreasing calcium absorption by the intestines, increased calcium storage in bones and increased calcium excretion through the kidney. Most calcitonin in the human body is produced in the chief cells of the thyroid gland.

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