title: A routine method for obtaining high contrast without staining sections.
mesh_terms: D000085:Acetates; D000818:Animals; D006652:Histological Techniques; D007313:Insecta; D008722:Methods; D008854:Microscopy, Electron; D013194:Staining and Labeling; D014501:Uranium
chemical_list: D000085:Acetates; D014501:Uranium