Table 1. Sequence and annealing temperature of β-lactamase gene primers.

Primer	Sequence (5′→3′)	Product size	Annealing temp (°C)	Reference
TEM	FP: CCCTGGTAAATGCTTC	919	45	[1]
	RP: GAGTAAACTTGGTCTG
SHV	FP: GGTTATGCGTTATATTCGCC	864	58	[3]
	RP: TTAGCGTTGCCAGTGCTC
OXA	FP: ACACAATACATATCAACTTCGC	885	50	[3]
	RP: AGTGTGTTTAGAATGGTGATC
CTX-M-1 group	FP: CGT CAC GCT GTT GTT AGG AA	780	50	[4]
	RP: ACG GCT TTC TGC CTT AGG TT
CTX-M-2 group	FP: TTA ATG ATG ACT CAG AGC ATT C	902	49	[5]
	RP: GAT ACC TCG CTC CAT TTA TTT
CTX-M-8 group	FP: ACT TCA GCC ACA CGG ATT CA	948	50	[5]
	RP: AAG TGG AGC GAC AGA GC
CTX-M-9 group	FP: CGG AAGCAGTCTAAATTC TTCGTGAAATAG	1160	54	[1]
	RP: CGG GCC AGT TGG TGA TTT GA
CTX-M-25 group	FP: GTA AGG CGG GCG ATG TTA AT	856	50	[5]
	RP: AAC CGT CGG TGA CAA TTC TG