title: A method for the rapid removal of sugars and salts from virus preparations on electron microscope grids.
mesh_terms: D002499:Centrifugation, Density Gradient; D008722:Methods; D008854:Microscopy, Electron; D010772:Phosphotungstic Acid; D010942:Plant Viruses / Q000302:isolation & purification*; D013194:Staining and Labeling; D013395:Sucrose
chemical_list: D010772:Phosphotungstic Acid; D013395:Sucrose