Introduction of heat-labile toxin (LT) synthesis in enterotocigenic strains of Escherichia coli by mitomycin C (MTC) was demonstrated. Six enteropathogenic strains which produce LT were inducible, exhibiting an 896-fold increase in LT when compared to ininduced cultures. On the other hand, four nonenteropathogens and three other pathogens which produce only the heat-stable toxin were not induce...

Volume 3, no. 3, e00564-15, 2015. Page 1: The title should read as given above and the number of enterotoxigenic Escherichia coli (ETEC) serogroup O6 strains in the study should be given as nine throughout because one of the ETEC strains was confirmed to be a non-O6 strain. Page 1: The third and fourth sentences of the second paragraph should read as follows. “The average size of the ETEC genom...