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Concentration in fecal samples of total enterococci (open circles), streptomycin-resistant enterococci (closed circles), and E. coli (+). From day 22 of the experiment, the animals were treated with streptomycin. At days 23 and 45, respectively, the recipient and donor strains of E. faecalis OG1 were introduced. The figure shows the average values from three mini-pigs. Error bars represent standard errors of the means.
