TABLE 1.

Primers and probes used for real-time polymerase chain reaction.

Primers/probes	5!	Sequence	3!	Reference
stx1a-primer		CAAGAGCGATGTTACGGT		(16)
stx1b-primer		AATTCTTCCTACACGAACAGA		(16)
stx1f-probe		CTGGGGAAGGTTGAGTAGCG	Fluorescein	(16)
stx1r-probe	CAL Fluor 610	CCTGCCTGACTATCATGGACA	3′ phosphor	(16)
stx2a-primer		GGGACCACATCGGTGT		(16)
stx2b-primer		CGGGCACTGATATATGTGTAA		(16)
stx2f-probe		CTGTGGATATACGAGGGCTTGATGTC	Fluorescein	(16)
stx2r-probe	CAL Fluor 610	ATCAGGCGCGTTTTGACCATCT	3′ phosphor	(16)