title: The structure of cauliflower mosaic virus. I. pH-induced structural changes.
mesh_terms: D002499:Centrifugation, Density Gradient; D004279:DNA, Viral; D006863:Hydrogen-Ion Concentration; D009029:Mosaic Viruses / Q000032:analysis / Q000648:ultrastructure*; D009994:Osmolar Concentration; D014461:Ultracentrifugation; D014508:Urea / Q000494:pharmacology
chemical_list: D004279:DNA, Viral; D014508:Urea