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Figure 1.
Fig. 1. LoxP, the natural recombination site of Cre. The
outermost 13-bp regions on each side (black) are inverted
repeats. The middle region (gray) is asymmetric and confers
directionality to the site. The base pair identities most
important for Cre binding (12) are boxed. Arrows indicate sites
of cleavage during recombination.
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