Sun versus skin.
D006801:Humans; D007634:Keratitis / Q000209:etiology; D010787:Photosensitivity Disorders / Q000517:prevention & control*; D012867:Skin / Q000528:radiation effects*; D012878:Skin Neoplasms / Q000209:etiology; D013471:Sunburn / Q000517:prevention & control; D013472:Sunlight / Q000009:adverse effects*; D013473:Sunscreening Agents / Q000627:therapeutic use*
D013473:Sunscreening Agents