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Agarose gel electrophoresis of colony PCR results of the selected clones containing recombinant plasmid PcDNA3.1-Tax-1. Lines 1 and 5, PCR products of the recombinant plasmid containing Tax-1 genes with an 890-bp fragment. Lines 2, 3 and 6, PCR products of plasmid PcDNA3.1 without the insert. Line 7,100 bp DNA ladder.
