TABLE 1.

Sequences of oligonucleotide primers used in this study^a

Gene	Primer	Sequence (5′→3′)	Position	Size of product (bp)
cdtA	cdtApos	TGA ACC TGG AAA AGG TGA TG	507-526	375
	cdtArev	AGG ATT ATT TAC TGG ACC ATT TG	882-860
cdtB	cdtBpos	CTT AAT GCA AGT AAA TAC TGA G	368-389	510
	cdtBrev	AAC GGA TCT CTT GCT TCA GTC	878-858
tcdA	NK2	CCC AAT AGA AGA TTC AAT ATT AAG CTT	2479-2505	251
	NK3	GGA AGA AAA GAA CTT CTG GCT CAC TCA GGT	2254-2283
tcdA rep	NK9	CCA CCA GCT GCA GCC ATA	8043-8060	1,265
	NK11	TGA TGC TAA TAA TGA ATC TAA AAT GGT AAC	6795-6824
tcdB	NK104	GTG TAG CAA TGA AAG TCC AAG TTT ACG C	2945-2972	203
	NK105	CAC TTA GCT CTT TGA TTG CTG CAC CT	3123-3148

^aData from references 6, 7, and 12. rep, repetitive region.