we have found that genomes of human t cell leukemia-lymphoma virus type i ( htlv-i ) , bk virus ( bkv ) , and a hepatitis b virus ( hbv ) dna sequence integrated into dna of a hepatoma-derived cell line contain binding sites for nuclear factor 1 ( nf-1 ) , a cellular protein which binds to adenoviral and putative cellular origins of dna replication .
C0007634
cellular
C0242961
origins of dna replication