the number of rous viral genomes in the cellular dna from two subclones ( rs2/3 , rs2/6 ) derived from the same clone of hamster bhk-21 cells transformed by rous sarcoma virus was determined by hybridization with viral complementary dna made in vitro , and the capacity of the cellular dna to infect ( transfect ) chicken embryo fibroblasts was compared before and after shearing this dna to about the size of the provirus ( 6 x 10 ( 6 ) to 7 x 10 ( 6 ) daltons ) .
C0007634
cellular
C0016030
fibroblasts