Figure 3

Midpoint rooted maximum likelihood phylogenies of cephalosporin-resistant E. coli isolates originating from gulls and bald eagles in Alaska based on individual chromosomally-encoded AMR genes – (a) ampH, (b) ampC2, (c) mrdA, and (d) ampC1. Each colour indicates a different allele for each gene sequence. Arrows indicate incongruence with the core genome phylogeny. Branch support values are indicated and based on 100 bootstrap pseudoreplicates.