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Evaluation of the recombination activity of indicated recombination systems in E. coli. One and two triangles mark the size of the recombined and non-recombined plasmids, respectively. M = marker, 2-log DNA ladder, NEB, no ind = no addition of L(+)-arabinose to the growth medium, 1, 10 and 100 = growth of the cells in the presence of 1 μg/ml, 10 μg/ml and 100 μg/ml L(+)-arabinose, respectively.
