Fig. 2From: Occurrence of virulence gene signatures associated with diarrhoeagenic and non-diarrhoeagenic pathovars of Escherichia coli isolates from some selected rivers in South-Western NigeriaPCR products of the amplification of uidA gene. Lane 1: molecular weight marker (100 bp); lane 2: negative control; lane 3: positive control (ATCC 25922); lanes 4–13: positive isolatesBack to article page