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DNA nanotechnology uses reciprocal exchange between DNA double helices or hairpins to produce branched DNA motifs, like Holliday junctions, or related structures, such as double crossover (DX), triple crossover (TX), paranemic crossover (PX) and DNA parallelogram motifs. We combine DNA motifs to produce specific structures by using sticky-ended cohesion (below, left). The strength of sticky-ended cohesion is that it produces predictable adhesion combined with known structure. From simpledoi:10.1017/cbo9781139015516 fatcat:msisbtpzwvh57nywxseslcaoqu