TABLE 1.

Oligonucleotide primers for PCR analysis of the C. botulinum C₁ toxin gene

Direction	Primera	Sequence
Sense	ToxC-384	5′ 384AAACCTCCTCGAGTTACAAGCCC406 3′
	ToxC-625	5′ 625CTAGACAAGGTAACAACTGGGTTA648 3′
Antisense	ToxC-850R	5′ 850GAAAATCTACCCTCTCCTACATCA827 3′
	ToxC-1049R	5′ 1049AATAAGGTCTATAGTTGGACCTCC1026 3′

^aThe locations of the PCR primers are indicated by the primer names. Primers were numbered according to the published strain 468C C₁ toxin gene DNA sequence (3a) (GenBank accession no. X53751).