Evidence for a bimodal distribution of <Emphasis Type="Italic">Escherichia coli</Emphasis> doubling times below a threshold initial cell concentration |
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| Authors: | Peter L Irwin Ly-Huong T Nguyen George C Paoli Chin-Yi Chen |
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| Institution: | (1) Molecular Characterization of Foodborne Pathogens Research Unit, Eastern Regional Research Center, Agricultural Research Service, U. S. Department of Agriculture, 600 East Mermaid Lane, 19038 Wyndmoor, PA, USA |
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| Abstract: | Background In the process of developing a microplate-based growth assay, we discovered that our test organism, a native E. coli isolate, displayed very uniform doubling times (τ) only up to a certain threshold cell density. Below this cell concentration
(≤ 100 -1,000 CFU mL-1 ; ≤ 27-270 CFU well-1) we observed an obvious increase in the τ scatter. |
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