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A mini-Tn5 transposon derivative, mini-Tn5gfp-km, has been constructed which contained a promoter-less artificial operon consisting of two open reading frames, green fluorescent protein (GFP) and neomycin phosphotransferase II (NptII). When this transposon was used to mutagenize Agrobacterium tumefaciens, all the mutants selected in the presence of kanamycin exhibited GFP expression, which could be...
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