Phenotypic and Genotypic Characterization of Extended-Spectrum Beta-Lactamases Produced by Escherichia coli Colonizing Pregnant Women

Table 1

Primers used for detection of β-lactamase genes by PCR.

Gene of resistance	Primer sequence (5′ to 3′)	Fragment size (bp)
blaCTX-M	Fwd: AT GTG CAG YAC CAG TAA RGT KAT GGC	593
	RV: TG GGT RAA RTA RGT SAC CAG AAY CAG CGG
blaSHV	Fwd: AGC CGC TTG AGC AAA TTA AAC	713
	RV: ATC CCG CAG ATA AAT CAC CAC
blaTEM	Fwd: C ATT TTC GTG TCG CCC TTA	800
	RV: C GTT CAT CCA TAG TTG CCT GACTTC