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Property Organism Value Units ID Details
Percent of well-studied microbial communities, such as the human distal gut, that have been cultured Microbes 20 to 40 % 109669 Huse SM, Dethlefsen L...
Fraction of all anaerobes in the colon of healthy human adults that is M. smithii, the most common archaeon in human gut Archaea Methanobrevibacter smithii ≤10 % 107457 Lurie-Weinberger MN, Peeri M...
Concentration of Plancomycetes bacteria in P3 alkaline compartment of hindgut Termite Cubitermes spp 2.6e+9 cells/ml 104950 Köhler T, Stingl U, Meuser K...
Fraction of all cells that are peptide- or polypeptide-producing enteroendocrine cells Mouse Mus musculus in stomach body ~7: in pyloric antrum 3: in small intestine crypt-villus cells ~0.5: in colon ~0.4 % 112583 Karam SM, Lineage commitment...
Summary of results of genome finishing for E. rectale strain ATCC 33656 and E. eligens strain ATCC 27750 bacteria Table - link N/A 112467 Mahowald MA et al., ...
Number of bacteria in orogastrointestinal tract (oral cavity and feces) Human Homo sapiens dental plaque ~10^11bacteria/g: saliva 10^8–10^9bacteria/mL: feces 10^11–10^12bacteria/g N/A 112857 Dueñas M et al., Studies...
Number of bacterial species-level and genus-level operational taxonomic units (OTUs) in human and worm & phylotype number in termite Metazoa animals species-level OTUs in human ~1,000: genus-level OTUs in worm 832: phylotypes in termite hindgut 216 OTUs/phylotypes per individual 113942 Shapira M. Gut Microbiotas...
Maximum number of e. coli in colon content Various 1e+8 cells/gram 102537 Hartl DL, Dykhuizen DE....
Fraction of 16S rDNAs molecular species that correspond to known organisms in fecal sample Human Homo sapiens 24 % 110959 Suau A et al., Direct...
Ratio between number of genes in microbiome and in human Human Homo sapiens 50-100 unitless 102388 Sears CL. A dynamic ...
Number of species in microbiome Human Homo sapiens 500-1000 unitless 102387 Sears CL. A dynamic ...
Distribution and composition of bacterial species in the gastrointestinal tract Human Homo sapiens Figure link - link CFU/mL 112858 Dueñas M et al., Studies...
Effectiveness of treating obesity Human Homo sapiens most treatments (typical maximal weight loss) <10%: obesity surgery (sustained weight loss) ≤50% % 117251 Berthoud HR. The vagus nerve...
Nominal mucosal surface area of colon Human Homo sapiens ~2,000 cm^2 111315 Sandle GI. Salt and water...
Destiny of bile salts Human Homo sapiens lost in feces 5%: reabsorbed in small intestine 95% % 113403 Rowland I et al., Gut...
Number of species of bacteria in mammalian large intestine bacteria 400-500 unitless 105655 Peekhaus N, Conway T....
Normal doubling time in human intestinal tract Bacteria Escherichia coli 40 hours 102096 Michael A. Savageau, 1983...
Concentration of Escherichia coli (in colony forming units=cfu) in faeces Human Homo sapiens in infancy >10^9 cfu/gram of faeces: after age 2 ~10^8 cfu/gram of faeces, gradually decreasing in the elderly cfu/gram of faeces 116916 Tenaillon O, Skurnik D...
Prevalence of Escherichia coli Vertebrates humans >90%: wild mammals 56%: birds 23%: reptiles 10 % 116911 Tenaillon O, Skurnik D...
Moisture content in feces Human Homo sapiens 26 % 110960 Suau A et al., Direct...