IGF-1 is made in response to growth hormone and is needed for growth hormone to have its effects on muscles and other tissues. Growth hormone, synthesized in the pituitary gland, travels to the liver, which then responds by producing IGF-1.
Spring City is a borough in Chester County, Pennsylvania, United States. The population was 3,323 at the 2010 census. Spring City is a member of the Spring-Ford Area School District. It is situated along the Schuylkill River, which divides Chester and Montgomery counties. Directly across the river is the borough of Royersford.
York Springs is a borough in Adams County, Pennsylvania, United States. The population was 574 at the 2000 census. York Springs is served by the Bermudian Springs School District (). York Sulphur Springs, the first summer resort in Adams County, was patronized by persons from Philadelphia and Baltimore who came to the resort by stage coach.