Bacterial biota in reflux esophagitis and Barrett’s esophagus

Table 4 Comparison of representation of bacterial phyla observed in studies of the esophagus and subgingival crevice

	Subgingival crevice			Esophagus
Phylum	Number of clones	Number of species		Number of clones	Number of species	Number of clones	Number of species
	Paster1	Paster1	Kroes2	Pei3		Present study
Clostridium group	0	0	13	0	0	0	0
Obsidian pool OB11	6	1	0	0	0	0	0
Deferribacteres	86	8	8	0	0	0	0
Spirochaetes	537	58	0	0	0	0	0
TM7	34	5	0	13	3	0	0
Fusobacteria	353	19	2	20	6	0	0
Actinobacteria	275	32	15	39	8	2	2
Firmicutes	659	113	15	626	41	18	11
Proteobacteria	338	51	14	20	14	31	11
Bacteroidetes	234	58	8	182	23	96	15
Total	2522	347	75	900	95	147	39

¹From Paster et al[14] ;

²from Kroes et al[28] ;

³from Pei et al[13].