Weighted UniFrac distance analysis. (A) The fecal microbiota dynamics of the patient and the donor. (B) Distance from the donor fecal microbiota of the first FMT. The fecal sample that was obtained immediately before the initiation of the first FMT on the same day was analyzed as “pre” data. The time points such as “next day,” “1w,” “2w,” and “4w” indicate periods from the initiation of the first or second cycle of FMT.