showed a trendp = 0.065
At the genus level, the 5-FU treatment showed a trend in increased relative abundance of Bacteroides from 24.4 ± 13.2% to 41.1 ± 11.6% ( p = 0.065) and decreased abundance of Escherichia / Shigella from 19.7 ± 17.1% to 8.9 ± 7.2% ( p = 0.23) in the lumen for 5 out of 6 donors.