Figure 2.

Comparison of fold-change of CFU by addition of AAs to the mixture of BAs. The ethanol-treated samples collected from five donors were incubated with each AA in addition to the BA mixture. The number of colonies formed on the GAM agar plate was determined after 72 h incubation. Fold-change was calculated based on the BA mixture for each fecal sample and is shown in the box plot. The samples were arranged in the order of the median fold-change among the five donors. The Wilcoxon rank sum test was used to test for significant differences between the BA mixture and BA plates. The asterisk on the bar represents p < 0.01.