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Genetic context of the mcr-1 gene in E. coli genomes isolated from chicken and pig farms in Lima. Six representative sequences show the diversity of the structural context of the mcr-1 gene from chicken and pig E. coli isolates in this study. The mcr-1 gene is marked in red. ISApl1 transposase, pap2 and nickB genes are marked in yellow, green and yellow, respectively. Regions of homology between sequences (>97%) are indicated by the graded shading.
