ad2++hey and ad2+d1 right junctions are identical and ad2++ley and ad2+nd4 left junctions are identical , a result that strongly suggests these ad2-sv40 hybrids arose by recombination between the linear ad2 dna and circular sv40 dna , followed by recombination between ad2 dna and sv40 dna present in the ad2-sv40 hybrid dna .
C0012925
circular
C0012854
dna