molecular studies by the southern transfer procedure of the unintegrated viral dna synthesized in these cells at a permissive ( 33 degrees c ) or nonpermissive temperature revealed that the levels of linear double-stranded viral dna ( 8.8 kilobase pairs ) were nearly identical in mutant or revertant cells incubated at 33 or 39 degrees c .
C0012939
viral dna
C0012854
double-stranded