title: Behaviour of a guanidine-dependent strain of poliovirus 1 in sucrose density and pH gradients.
mesh_terms: D002499:Centrifugation, Density Gradient; D006146:Guanidines / Q000378:metabolism; D007525:Isoelectric Focusing; D009154:Mutation; D017955:Poliovirus / Q000032:analysis / Q000378:metabolism / Q000472:pathogenicity*; D010948:Viral Plaque Assay
chemical_list: D006146:Guanidines