Fig. 2

Bacterial species of the gut microbiome whose relative abundance was altered post-FMT. Species are grouped according to whether they were enriched (top panel) or reduced (bottom panel) post-FMT and are listed in order of statistical significance from week 6 onwards (linear model, FDR adjusted q < 0.1). Relative abundances were log₁₀-transformed with a small pseudo-count (1E-06) added to account for zero abundance values. A relative abundance < 0.0001% signifies that the species did not pass the minimum threshold abundance level for quantification. Each cell represents the mean transformed relative abundance for a specific species according to the grouping variable; “All” combines male and female averages, while “Females” and “Males” allow species abundances to be subset by sex and contributing donors. Placebo recipient profiles are not displayed, as no bacterial species in their gut microbiome were significantly altered throughout the course of the study.