title: Development of dermatopathology and Paul Gerson Unna.
mesh_terms: D003880:Dermatology / Q000266:history*; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D010336:Pathology / Q000266:history; D012871:Skin Diseases / Q000266:history / Q000473:pathology