Table 3.

Abundance of major bacterial phyla in patient and donor samples

	Average No. of OTUs (of 22,535 total)
Phylum	Donor	Pre-FMT	Post-FMT	P (pre- vs. post-FMT)
Actinobacteria	275	24	219	0.044
Bacteroidetes	8,316	36	4,402	0.0015
Firmicutes	10,223	5,412	12,443	0.0016
Fusobacteria	0	480	2	0.177
Proteobacteria	207	12,689	1,234	<0.0001
Verrucomicrobia	189	3,469	449	0.035
Bacteria-unclassified	3,302	424	3,785	<0.0001

OTUs, operational taxonomic units.