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Structure of IS1634 insertion sites. The map for the IS1634 clones (open boxes) that were analyzed shows the long, variable-length direct repeats at the site of insertion as black boxes and black arrows beneath (A to F). The plasmid pJFFevAM2516 contains one copy of IS1634 with no apparent flanking direct repeats (G). Hatched boxes represent all or part of IS1296. Grey triangles represent the inverted repeats IR-L and IR-R of IS1634 or IS1296.
