FIG. 3.

Nucleotide sequences of 38 proviral integration target sequences determined in this study. Nucleotides in boldface in the center are duplicated at virus-host DNA junctions, and the deduced IN cleavage sites (arrows) are indicated. Positions of the upstream and downstream nucleotides adjacent to the duplicated residues are numbered −1 and +1, and nucleotide sequences of the region spanning from −50 to +50 are aligned. Pool and clone numbers are shown on the left, and the numbers of sister clones corresponding to each integration target are shown on the right.