Mutation of polioviruses with respect to size of plaque. I. Selection of minute plaque mutants of three types of polioviruses in tissue cultures.
D009140:Musculoskeletal Diseases; D009154:Mutation; D011051:Poliomyelitis; D017955:Poliovirus / Q000208:ethnology*; D014780:Viruses
POLIOMYELITIS VIRUSES/culture