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KsgA deficiency reduces tolerance to chloramphenicol in S. Enteritidis. Frequency of resistant colonies to chloramphenicol (10 μg/ml) was assessed through the agar dilution method in wild-type (WT) and KsgA-deficient mutant (ksgA::Tn5) strains. Results from three independent experiments are expressed as average numbers of resistant colonies per 108 bacteria ± SD.
