title: Tubular structures associated with maize rough dwarf virus particles in crude extracts: electron microscopy study.
mesh_terms: D008854:Microscopy, Electron; D010772:Phosphotungstic Acid; D010935:Plant Diseases; D010936:Plant Extracts; D010942:Plant Viruses / Q000302:isolation & purification; D013194:Staining and Labeling; D003313:Zea mays / Q000166:cytology*
chemical_list: D010936:Plant Extracts; D010772:Phosphotungstic Acid