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. 2016 Aug 11;363(18):fnw195. doi: 10.1093/femsle/fnw195

Figure 1.

Figure 1.

The structures of composite transposons and TUs. The composite transposons consist of two IS elements (blue box) flanking DNA segment (green box). The TU circular molecule can be excised from the composite transposon. The purple and red arrows represent the binding site of the DNA primers for the amplification of composite transposon and TUs, respectively.