Fig. 3From: 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 co-regulated pilus gene (tcpA) detected in fish isolates using PCR at 453 bp. LD DNA ladder; Lane 1 to 10 are V. cholerae DNA samples; NC negative control; PC positive controlBack to article page