Mutability towards L plaque character of the ECHO virus 19 S particles. II. Variation of mutation rate figures in different S clones obtained from the same ECHO virus 19 strain.
D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D029822:Enterovirus B, Human; D005827:Genetics, Microbial; D009154:Mutation; D012641:Selection, Genetic