title: A comparative electron microscopic study of the perivascular hyaline from porphyria cutanea tarda and from lipoid-proteinosis.
mesh_terms: D000328:Adult; D002196:Capillaries / Q000473:pathology*; D003094:Collagen / Q000032:analysis; D006801:Humans; D006818:Hyalin / Q000201:enzymology*; D008064:Lipidoses / Q000473:pathology*; D008065:Lipoid Proteinosis of Urbach and Wiethe / Q000473:pathology*; D008854:Microscopy, Electron; D011164:Porphyrias / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology*
chemical_list: D003094:Collagen