We previously identified and analyzed a 45-nucleotide sequence ( downstream regulatory element 1 [ DRE 1 ] ) , +195 to +240 , at the boundary of the R/U5 region of the long terminal repeat which is required for HTLV-I basal transcription .
we previously identified and analyzed a 45-nucleotide sequence ( downstream regulatory element 1 [ dre 1 ] ) , +195 to +240 , at the boundary of the r/u5 region of the long terminal repeat which is required for htlv-i basal transcription .
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