Table 1. Oligonucleotide primers used in the PCR.

Gene amplified	Primer name	Sequence(5′–3′)	PCR products size(bp)
ExhA	MU4FA, MU3RA	GCTACTGGTTTTGTAGTTTCAC GTAACCTACAACTCTTAGAACC	316
ExhB	F2EB, MU3RB	AACACGCCAATAGAGAATGTATCAC, TATCAAATCTTATACCAGTTAGAATATCTCC	717
ExhC	MU3FC, MU4RC	GAATAAATATTATGGAGTCTCTCCTGATC, CCATAGTATTTCAATCCAAAATCAGTAC	525
ExhD	F2ED, MU3RD	GAACAAATATAATGGAAGAAACCCAC, GATTTCCCTACGTGAATACCTACAATAC	588
23S rDNA	FWL23S, WL23SR	CGACGTTCTAAACCCAGCTC, GCGAAATTCCTTGTCGGG	662