A blister is a bubble of fluid under the skin. The clear, watery liquid inside a blister is called serum. It leaks in from neighboring tissues as a reaction to injured skin. If the blister remains unopened, serum can provide natural protection for the skin beneath it. Small blisters are called vesicles. Those larger than half an inch are called bullae. A blood blister is filled with blood, rather than serum.
With 15,145 people, Cullman is the 41st most populated city in the state of Alabama out of 578 cities. But watch out, Cullman, because Alexander City with 14,849 people and Scottsboro with 14,748 people are right behind you.
Tuscaloosa County is a county in the U.S. state of Alabama. As of the 2010 census, its population was 194,656. Its county seat and largest city is Tuscaloosa, the former state capital from 1826 to 1845. The county is named in honor of Tuskaloosa, a paramount chief of the Mississippian culture, considered ancestors of the Choctaw in the region. Tuscaloosa County is included in the Tuscaloosa, AL Metropolitan Statistical Area. The county is the home of the University of Alabama and Stillman College.