title: [On the value of ruthenium red as a contrast medium for electron microscopy].
mesh_terms: D003287:Contrast Media; D004583:Electrons; D008853:Microscopy; D008854:Microscopy, Electron; D012430:Ruthenium Red
chemical_list: D003287:Contrast Media; D012430:Ruthenium Red
keywords: MICROSCOPY, ELECTRON