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Genomic organization of the aminoglycoside resistance island in C. coli SX81 in comparison with plasmid pCG8245 and chromosomal genes of C. coli RM2228. Arrows indicate the positions and directions of transcription of the genes. Homologous genes in the three fragments are displayed with the same types of shading. The locations of primers cadf-F and pfo-R used to detect the unique genomic island are indicated.
