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.
2012 (3rd annual VidCon) VidCon 2012, the third annual conference, was held in June 28â30, 2012 at the Anaheim Convention Center. The new venue offered a much larger capacity with room for future expansion, with 7,000 people in attendance. VidCon 2013 was held in August 1â3, 2013 at the Anaheim Convention Center.