Author affiliations: *National Taiwan University College of Medicine, Taipei, Taiwan; †The Study Group of Surveillance from Multicenter Antimicrobial Resistance in Taiwan, Taipei, Taiwan; ‡Graduate Institute of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
Figure 3. Accumulation of ciprofloxacin by the two ciprofloxacin-resistant isolates of genosubtype Ia of Salmonella enterica serotype Typhimurium and genosubtype B1 of S. enterica serotype Choleraesuis and one clinical isolate of S. enterica serotype Typhimurium (ciprofloxacin MIC = 0.06 μg/mL). Carbonyl cyanide m-chlorophenylhydrazone (CCCP) (100 μM) was added at the time indicated by the arrow.
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