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Time course of bacterial entry. HEp-2 cells were infected at an MOI of 10 for various infection periods and treated with gentamicin for 1 h. Percent invasion is the mean percentage of the inoculum surviving gentamicin treatment. (A) ■, strain LF82; ▴, EPEC strain E2348/69; □, ETEC strain H10407. (B) ■, strain LF82; ○, EIEC strain E12860/0. Each point is the mean of at least three separate experiments.
