Fingerprinting analysis of ESBL-producing strains. (A) Rep-PCR of E. coli clinical isolates carrying blaCTX-M genes. Lane A1, E. coli TN18; lane A2, E. coli TN03; lane A3, E. coli TN08; lane A4, E. coli TN09; lane A5, E. coli TN14; lane A6, E. coli TN15; lane A7, E. coli RB-01; lane A8, E. coli TN12; lane A9, E. coli TN13; lane A10, E. coli TN05; lane A11, E. coli TN06; lane A12, E. coli TN07; lane A13, E. coli TN16; lane A14, E. coli TN17; lane A15, E. coli LM-01; lane A16, E. coli TN19. (B) ERIC-PCR of K. pneumoniae isolates. Lane B1, K. pneumoniae KP-LT; lane B2, K. pneumoniae KP-02; lane B3, K. pneumoniae KP-03.