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Copyright ©2011 Baishideng Publishing Group Co.
World J Gastroenterol. Jun 28, 2011; 17(24): 2890-2896
Published online Jun 28, 2011. doi: 10.3748/wjg.v17.i24.2890
Table 1 Composition of the human gastrointestinal tract microflora (from Nord and Kager, 1984)
MicroorganismsNumbers of microorganisms (CFU/mL or CFU/g)
StomachJejunumIleumColon
Total bacterial count0-1030-105103-1091010-1012
Aerobically growing agents
Family enterobacteriaceae0-1020-103102-107104-1010
Streptococci0-1030-104102-106105-1010
Staphylococci0-1020-103102-105104-109
Lactobacilli0-1030-104102-103106-1010
Yeasts0-1030-102102-104104-106
Anaerobic bacteria
BacteroidesRare0-103103-1071010-1012
BifidobacteriaRare0-104103-109104-1011
PeptostreptococciRare0-103102-1061010-1012
ClostridiaRareRare102-104106-1011
EubacteriaRareRareRare1010-1012