virus growth in a line of cloned mosquito in which weev produced a cytopathic infection ( c.p.e . ) was analysed with the result that the viruses could be divided into two groups : one in which wt weev , chemically induced ts mutants and early passage rna+ mutants all induced maximal c.p.e. , and another in which late passage rna- mutants and one early passage rna- mutant induced very little c.p.e. , but released much more infections virus into the culture fluid .
C0009450
infection
C0042769
infections virus