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a) Results of S1‐PFGE of CP131 and its subclones after serial passages in colistin and colistin‐free medium. b) Comparison of pCP131‐IncHI1 and the respective plasmid from the subclone CP131‐C0_28‐11, without mcr‐3.1. c) Comparison of the mcr‐1‐bearing chromosome of CP131 and its evolved version from the subclone CP131‐C0_21‐1.
