title: Changes after prolonged exposure to sunlight. A study of factors influencing actinic degeneration.
mesh_terms: D000375:Aging / Q000502:physiology*; D003094:Collagen; D006801:Humans; D012871:Skin Diseases; D013471:Sunburn; D013472:Sunlight
chemical_list: D003094:Collagen
keywords: AGING/physiology; COLLAGEN; SUNBURN