TABLE 2.

Nucleotide sequences of primers used for porB gene amplification and sequencing

Primera	Nucleotide sequence
porB gene
(F) P27	TTG TAC GGT ACA ATT AAA GCA GGC GT
(R) P28	TTA GAA TTT GTG ACG CAG ACC AAC
Class 2 protein-encoding porB gene
(F) 2F327	GGG TAC TAT CGG TCG TGT AGA AAG
(F) 2F657	GTA CGT TTC TGT TGC CGG TCA G
(F) 2F505	GCC GGT TTC TTC GGT CAA TAC GCA G
(F) 2F476	CTT ACC ACG CCG GTC TGA AAT ACG
(F) 2F777	CGT AAC GCC TCG CGT TTC TTA CGC
(R) 2R327	CTT TCT ACA CGA CCG ATA GTA CCC
(R) 2R177	GAC TGG CGG TTA CCC CAG CCG CTG
(R) 2R476	CGT ATT TCA GAC CGG CGT GGT AAG
(R) 2R777	GCG TAA GAA ACG CGA GGC GTT ACG
Class 3 protein-encoding porB gene
(F) 273	CGA CAT CAA TCC TTG GGA TAG C
(F) 392	GCG TAC AAT ACG CGC TTA ACG A
(F) 685	CGC TTC GGC AAC GTA ACG CCC C
(F) 731	CGA CAA TGA TGC CCT GTA C
(F) 651	GGC GGT GCC TAT AAA AGA CAT
(R) 439	GTA GCG TAC GGA AAT GAG GCG
(R) C3RVR1	CGG TTT GAG AGT TGT GCG
(R) 714	GGT GAA TCT GGT ATT TCT CAA T
(R) 294	GCT ATC CCA AGG ATT GAT GTC G
(R) 414	GTC GTT AAG CGC GTA TTG TAC G
(R) 700	TTA CGT TGC CGA AGC GGT ATG C
(R) 202	GTT ACC GAG GTC TTC TTG GCC

^aPrimers P27 and P28 were used to amplify the porB gene (7). Primer C3RVR1 was described previously (32). (F) and (R), forward and reverse orientations of primers, respectively, in relation to the direction of gene transcription.