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Confirmation of rhINF-β encoding gene in Escherichia coli after plasmid extraction by 0.8 % agarose gel electrophoresis. Lane 1: GeneRuler™ 1 kb DNA Ladder (Fermentas), Lane 2: Escherichia coli BL21 (DE3) with plasmid (Positive control), Lane 3: Escherichia coli BL21 (DE3) without plasmid (Negative control).
