Parathyroid hormone (PTH), also called parathormone or parathyrin, is a hormone secreted by the parathyroid glands that is important in bone remodeling, which is an ongoing process in which bone tissue is alternately resorbed and rebuilt over time. PTH is secreted in response to low blood serum calcium (Ca 2+) levels.
See also: Legionnaires' disease. On July 21, 1976, the American Legion opened its annual three-day convention at the Bellevue-Stratford Hotel in Philadelphia, Pennsylvania. More than 2,000 Legionaires, mostly men, attended the convention.
For other uses, see American Legion (disambiguation). The American Legion, Inc., is an American veterans' organization formed in Paris, France, on March 16, 1919, by members of the American Expeditionary Forces (A.E.F.) The Legion was chartered by the United States Congress on September 16, 1919.