Genetic structures of AbaR-like RIs in seven MDR strains and seven previously reported GC2 strains. Green rectangles indicate resistance region RR1; red rectangles indicate resistance region RR2; grey rectangles indicate resistance region RR3; orange rectangles indicate Tn6022 and Tn6022Δ; and blue rectangles indicate a cluster of orfs encoding proteins with unknown function. The dashed black lines denote deletions. The vertical arrows in AbaRBJAB07104, AbaR1656–2 and AbaRTCDC-AB0715 indicate insertions of segments specific to these strains. RR1: tniC, tniA, tniBΔ, ISAba1, sul2, glmM (phosphoglucosamine mutase), and tnsA (transposase protein A); RR2: tniCb, tniAb, tniBΔ2, ISAba1, sul2, and CRΔ; RR3: tetA(B), tetR(B), CR (ISVsa3), strB, strA, and orf4b.