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Fate of E. coli O157:H7 ATCC 43895 Tn7gfp (filled symbols) and BRMSID 188 Tn7gfp (open symbols) on lettuce plants incubated at 8°C (A) and 16°C (B). Culturable populations on TSA (diamonds) and SMAC (squares) media and viable counts (circles) are indicated. The data are mean values (n = 6) from two independent experiments with different bacterial cultures and different sets of plants. Error bars represent the standard deviations.
