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Surrounding DNA sequences for the blaCTX-M genes for the 42 isolates. Row 1, E. coli 13 and 18; row 2, E. coli 7, 9, 11, 14, 15, 16, 17, 20, 22, 23, 26, 28, 29, 32, 33, 34, 35, 36, and 37; K. oxytoca 38; K. pneumoniae 39, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, and 55; P. mirabilis 56 and 57; row 3, E. coli 8, 10, 12, 14, 21, and 30 and P. mirabilis 57. IRR and IRL, inverted repeat (right) and inverted repeat (left), respectively.
