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 the arena in Miami, see American Airlines Arena. The American Airlines Center (AAC) is a multi-purpose arena, located in the Victory Park neighborhood, near downtown Dallas, Texas. The venue serves as the home to the Dallas Mavericks of the National Basketball Association, and the Dallas Stars of the National Hockey League.