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Agarose gel electrophoresis (2% w/v) used for the separation of PCR products produced by a multiplex PCR reaction against blaKPC, blaNDM, blaOXA-48 and blaVIM genes. Blank corresponds to a negative control (without DNA). Bands correspond to PCR products from PCR screening of K.pneumoniae isolates 4,7,9,11,13,15 and isolate 16. The size of each amplicon is indicated on the left. The ladder used is the 100 bp DNA ladder (InvitrogenTM, ThermoFisher Scientific).
