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Distribution of plasmids carrying ARGs among Salmonella subgroups. The first ring of the tree represents the subspecies of each strain, while the second ring shows the different serovars of Salmonella. The third ring displays the number of Salmonella-carrying plasmids, and the fourth ring indicates the number of plasmid-bearing ARGs. The fifth ring classifies the ARGs carried on plasmids and is color-coded to indicate the presence (in red) or absence (in light gray) of ARGs.
