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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Methods Mol Biol. 2016;1333:83–100. doi: 10.1007/978-1-4939-2854-5_8

Figure 1. Biphasic killing of E. coli treated with antibiotics.

Figure 1

Survival fraction of exponential phase E. coli treated with 200µg/mL ampicillin (AMP) or 5µg/mL ofloxacin (OFL) as measured by CFU. Initial phase of killing (I: dark gray) corresponds to death of normal cells, whereas the second phase of killing (II: light gray) represents colonies derived from persisters.