Review
Copyright ©The Author(s) 2016.
World J Gastroenterol. Oct 21, 2016; 22(39): 8698-8719
Published online Oct 21, 2016. doi: 10.3748/wjg.v22.i39.8698
Table 1 Abundance of bacterial species in various sections of the human intestine
IntestineAbundance of BacteriaBacteria
Small intestine
DuodenumAbout 103 (bacteria/mL)Lactobacillus1
Streptococcus2
JejunumAbout 104 (bacteria/mL)Lactobacillus1
Streptococcus2
Staphylococcus
Veillonella2
Ileum106-108 (bacteria/mL)Enterobacteri1
Enterococcus1
Bacteroides12
Clostridium12
Lactobacillus1
Veillonella
Large intestineAbout 1011 (bacteria/g)Bacteroides12
Eubacterium2
Bifidobacterium1
Ruminococcus
Peptostreptococcus
Propionibacterium
Clostridium12
Lactobacillus1
Escherichia
Streptococcus2
Methanobrevibacter