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Dose-response (a) and time-response (b) assays, by flow cytometry, of a starting inoculum of 108 E. coli O111 (NCTC 8007) cells per ml versus HLP 2. The percentages of fluorescent bacterial cells in the presence of PI (▴) or DiBAC4(3) (•) are shown. Results are means ± standard errors from at least three experiments.
