title: Negative staining of protein macromolecules: a simple rapid method.
mesh_terms: D001414:Bacitracin; D007075:Immunoglobulin M; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D010772:Phosphotungstic Acid; D011506:Proteins / Q000378:metabolism*; D013194:Staining and Labeling / Q000379:methods*
chemical_list: D007075:Immunoglobulin M; D046911:Macromolecular Substances; D011506:Proteins; D010772:Phosphotungstic Acid; D001414:Bacitracin