title: Phase contrast electron microscopy of biological materials.
mesh_terms: D005069:Evaluation Studies as Topic; D008722:Methods; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D008954:Models, Biological; D013194:Staining and Labeling; D014027:Tobacco Mosaic Virus; D014764:Viral Proteins
chemical_list: D014764:Viral Proteins