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Electrophoresis of the mcr-1 PCR product in Pseudomonas aeruginosa and Acinetobacter spp. isolates obtained in a public hospital from Recife-PE, Brazil, collected between 2018 and 2019. L: molecular weight marker; C+: positive control (E. coli strain NCTC 13846); C−: negative control; bp: base pairs.
