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.
Pale bluish or grayish skin tone (cyanosis), which can also affect the lips and nails. Patchy skin color changes, such as patches of white skin (vitiligo). Tiny red or purple spots (petechiae). Unusually light skin color (hypopigmentation). Pigment-producing cells in the skin called melanocytes give skin its color. Melanocytes produce a pigment called melanin. Lighter skin, or hypopigmented skin, produces less melanin, while darker areas of skin, or hyperpigmented skin, produce more melanin.