The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen, though other elements are found in the side-chains of certain amino acids. About 500 amino acids are known and can be classified in many ways.
Friendly is a town in Tyler County, West Virginia, in the United States.
Virginia is for Lovers. Woodlawn. Discover things to do, places to stay, and where to dine in Woodlawn. Use the links above to find area events, an interactive map of what's nearby and great deals and packages. Crooked Creek WMA Birding & Wildlife Trail.