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Table 2 Average distribution of bacterial phyla

From: The human jejunum has an endogenous microbiota that differs from those in the oral cavity and colon

  Jejunum Jejunum Oral 1 Oral 2 Colon 1 Colon 2
Average % Dlugosz Guerrero-P. Oh Turnbaugh Claesson
Phylum (this report) ref. [15] ref. [26] ref. [22] ref. [24] ref. [25]
Firmicutes 43.7 43.0 47.1 57.6 51.4 40.0
Proteobacteria 25.5 23.0 22.7 21.6 2.1 2.0
Bacteroidetes 14.4 15.0 21.2 9.8 39.5 57.0
Actinobacteria 8.1 9.3 5.0 7.1 5.9 0.4
Fusobacteria 7.8 7.0 2.9 3.9 0 0.0
all other phyla 0.5 2.7 1.1 0.0 1.1 0.6
Total 100.0 100.0 100.0 100.0 100.0 100.0
  1. Column 1 shows the mean percent value for the 16S rRNA gene profile of 5 major phyla, and of all minor bacterial phyla combined. This is compared with similar profiles from the jejunal mucosal data of Dlugoz et al. [15], and averaged data from two studies for oral saliva (Guerrero -Preston et al. [26] and Oh et al. [22]). Colon data is from normal adults (Turnbaugh et al. [24]) and aged individuals Claesson [25]