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These two pathogroups are defined based on the pathogroup-associated virulence genes: stx encoding Shiga toxin (Stx) for STEC and elt encoding heat-labile and/or est encoding heat-stable enterotoxin (ST) for ETEC. The study investigated the genomics of STEC/ETEC hybrid strains to determine their phylogenetic position among E.

‘ […] I don′t know if I would have managed a commission. I don′t know if I was bright enough for that. But I was a pretty ridgy-didge soldier.’

heavy yokes, expenses, undertakings, trials, news, etc.