Fig. 2From: Toxigenic Vibrio cholerae O1 in vegetables and fish raised in wastewater irrigated fields and stabilization ponds during a non-cholera outbreak period in Morogoro, Tanzania: an environmental health studyCholera toxin gene (ctx) detected in fish isolates using PCR at 167 bp. LD DNA ladder; lane 1 to 10 are V. cholerae DNA samples; NC negative control (DNA free water); PC positive control (VC O139, ATCC 51394)Back to article page