we previously reported that dna of the oncogenic strain bc-1 of marek 's disease virus serotype 1 ( mdv1 ) contains three units of tandem direct repeats with 132 base pair ( bp ) repeats within the inverted repeats of the long regions of the mdv1 genome , whereas the attenuated , nononcogenic viral dna contains multiple units of tandem direct repeats ( maotani et al. , 1986 ) .
C0012854
dna
C0012939
viral dna