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.
The Bellevue-Stratford Hotel, site of the first known outbreak of Legionnaires' disease. The hotel closed in November, 1976, four months after the outbreak. The 1976 Legionnaires Disease outbreak also known as Legion Fever, refers to the first known cases of infection by Legionella pneumophila in the United States.