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Kinetics of intracellular multiplication of E. tarda in blue gourami phagocytes. Nonopsonized (A) and opsonized (B) E. tarda strains (PPD130/91 (♦), PPD125/87 (●), AL9379 (▪), PPD76/87 (▴), P1 (⋄), and 348 (○) were used. P1 and 348 are TnphoA mutants of E. tarda PPD130/91. The ratio of intracellular bacteria at various times was normalized to the number of bacteria at 2 h. Values represent the mean ± SEM of the bacteria counted in two wells in triplicate experiments.
