title: [Symposium I: histological study on the etiology of verruca senilis].
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D006801:Humans; D007642:Keratosis / Q000209:etiology* / Q000473:pathology; D008875:Middle Aged; D012867:Skin / Q000473:pathology