Table 1.

Oligonucleotide primers used for polymerase chain reaction

Gene	Primer	Sequence (5'→3')	PCR products (bp)	Annealing temperature (°C)	Ref.
16S rRNA	HP1	GCAATCAGCGTCAGTAATGTT C	519	58.5	[85]
	HP2	GCTAAGAGATCAGCCTATGTCC
vacA (s1, s2)	VA1F	ATGGAAATACAAGAAACACACC	s1: 259	56.0	[25]
	VA1R	CTGCTTGAATGCGCCAAACTTTAATC	s2: 286
vacA (m1, m2)	VAG-F	CAATCTGTCCAATCAAGCGAG	m1: 570	58.5	[25]
	VAG-R	GCGTCAAAATAATTCCAAGG	m2: 645
cagA	D008	ATAATGCTAAATTAGACAACTTGAGCGA	298	58.5	[86]
	R008	TTAGAATAATCAACAAACATCACGCCAT

PCR: Polymerase chain reaction.