Clinical characteristics of all 18 HCT patients. The right panel depicts the timing of stool collection during the course of transplantation (rectangles), relative to hematopoietic cell infusion (day 0), for each patient. Stacked colors represent each sample’s microbiota composition (based on 16S sequencing). Boxes are drawn around the anaerobes. Pink shading represents times of inpatient hospitalization. Abbreviations: Auto, autologous; Allo, allogeneic; RIC, reduced intensity conditioning; MA, myeloablative; IV, intravenous; PO, oral; cipro, ciprofloxacin; metro, metronidazole; pip-tazo, piperacillin-tazobactam; mero, meropenem; vanco, vancomycin; TMP-SMX, trimethoprim-sulfamethoxazole; C. diff, Clostridium difficile; BSI; bloodstream infection; VRE, vancomycin-resistant enterococci; atova, atovaquone.