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Sequencing alignment of mcr-1 harboring IncX4 plasmids. The mcr-1 harboring plasmid pNG14043 with GenBank no. KY120364 which was isolated from S. Typhimurium in Taiwan was used as refrence plasmid (black circle). The outmost circle in red arrows denots the annotations of refrence plasmid. The figure shows the extremly high degree of homology of the four mcr-1 harboring IncX4 plasmids. Detailed information of mcr-1 location of plasmids is provided in Figure 2.
