The basic unit of the thyroid gland is the follicle. The thyroid gland captures dietary iodine, synthesizes thyroid hormone from it, and stores thyroid hormone until it is needed. Colloid, the material in the center of the follicles, stores thyroid hormone in a large protein called thyroglobulin.
Greensburg is a town in and the parish seat of St. Helena Parish, Louisiana, United States. The population was 718 at the 2010 census. It is part of the Baton Rouge Metropolitan Statistical Area. Greensburg is one of the oldest towns in Louisiana.
The National Weather Service confirmed two tornadoes touched down in the southeastern part of the state Thursday, taking down trees and power lines, the AP reported. One hit east of Greensburg in St. Helena Parish and the other struck near Tangipahoa in Tangipahoa Parish.