The juxtaglomerular cells (JG cells, or granular cells) are cells in the kidney that synthesize, store, and secrete the enzyme renin.he juxtaglomerular cells (JG cells, or granular cells) are cells in the kidney that synthesize, store, and secrete the enzyme renin.
Throckmorton County, Texas. Throckmorton County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 1,641. Its county seat is Throckmorton. The county was created in 1858 and later organized in 1879. It is named for William Throckmorton, an early Collin County settler.
Early Career: The son of a physician, James Throckmorton moved to Arkansas as a boy in 1836, then came to Collin County, Texas, in 1841 to help his family settle near present-day Melissa. He studied medicine in Kentucky with his uncle, then returned to Texas to serve as an army surgeon in the Mexican War.