title: Positive desmosome staining in the uranaffin reaction.
mesh_terms: D001650:Bile Duct Neoplasms / Q000175:diagnosis; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D006801:Humans; D008854:Microscopy, Electron / Q000379:methods*; D009490:Neurosecretory Systems / Q000648:ultrastructure*; D014501:Uranium
chemical_list: D014501:Uranium