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.
UPSHUR COUNTY. Upshur County is in northeastern Texas. The center of the county lies at 32Â°44' north latitude and 94Â°54' west longitude. Gilmer, the seat of government, is near the center of the county, twenty-three miles northwest of Longview. The county was named for Abel Parker Upshur, the secretary of state under President John Tyler.