Significant changes in bacterial abundance relative to aHSCT. Heatmap of bacterial abundance in each period (pre-aHSCT, early post-aHSCT, and late post-aHSCT). The bacterial genera and species shown are only those found to be significantly different in abundance between the pre-aHSCT and early post-aHSCT periods and/or the pre-aHSCT and late post-aHSCT periods and those present in ≥10% of samples tested, at a minimum of 0.01% relative abundance. Clustering by row (ie, by bacteria) is based on Pearson clustering distances and has been performed separately for genera and species. Clustering by column (ie, by sample) is based on Euclidean distances and has been performed separately for each time period.