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.
Lauderdale County is a county located in the northwestern corner of the U.S. state of Alabama. As of the 2010 census the population was 92,709. Its county seat is Florence. Its name is in honor of Colonel James Lauderdale, of Tennessee. Lauderdale is part of the Florence-Muscle Shoals, AL Metropolitan Statistical Area, also known as The Shoals.