Table 1.

Primer sequences of genes of interest

Region	Primer	Nucleotide sequence (5'→3')	PCR product (bp)	Reference
26kDa	26kDa-F	TGGCGTGTCTATTGACAGCGAGC	298	9
	26kDa-R	CCTGCTGGGCATACTTCACCAAG
ureC	ureC-F	AAGCTTTTAGGGGTGTTAGGGGTTT	294	10
	ureC-R	AAGCTTACTTTCTAACACTAACGC
cagA	cagA-F	AATACACCAACGCCTCCAAG	400	11
	cagA-R	TTGTTGCCGCTTTTGCTCTC
vacA	vacA-F	GCTTCTCTTACCACCAATGC	1160	12
	vacA-R	TGTCAGGGTTGTTCACCATG
	m2-R	CATAACTAGCGCCTTGCAC
iceA1	iceA1-F	GTGTTTTTAACCAAAGTATC	246	5
	iceA1-R	CTATAGCCAGTCTCTTTGCA		5
iceA2	iceA2-F	GTTGGGTDTDTCACAATTTAT	229/334	5
	iceA2-R	TTGCCCTATTTTCTAGTAGGT		5
babA2	babA2-F	AATCCAAAAAGGAGAAAAAGTATGAAA	831	4
	babA2-R	TGTTAGTGATTTCGGTGTAGGACA		4

F: forward primer R: reverse primer.