Both drugs had been previously recommended for approval 14-0 by members of FDA's Anti-Infective Drugs Advisory Committee. The significance of two new antibiotics in four weeks? We've recently been averaging one antibiotic every three years.
Skin color is due primarily to the presence of a pigment called melanin, which is controlled by at least 6 genes. Both light and dark complexioned people have melanin. However, two forms are produced--pheomelanin, which is red to yellow in color, and eumelanin, which is dark brown to black.
Pheomelanin is also found in the hair and skin. This type of melanin provides pink and red colors and is the main pigment found among red-haired individuals. This type of melanin is not as protective against UV-radiation induced cancer as eumelanin.