Relative efficiency of pigment and horny layer thickness in protecting the skin of Europeans and Africans against solar ultraviolet radiation.
D006801:Humans; D010858:Pigmentation; D012867:Skin; D012879:Skin Physiological Phenomena; D013472:Sunlight; D014466:Ultraviolet Rays
PIGMENTATION; SKIN/physiology; SUNLIGHT; ULTRAVIOLET RAYS/effects