||Human Homo sapiens
||Sears CL. A dynamic partnership: celebrating our gut flora. Anaerobe. 2005 Oct11(5):247-51.PubMed ID16701579
||Hooper LV, Gordon JI. Commensal host-bacterial relationships in the gut. Science. 2001 May 11292(5519):1115-8.PubMed ID11352068
||Assuming an average microbial genome size of 5 million base pairs (bp) and 4000 genes per genome, the 2.5-billion- to 5-billion-bp intestinal microbiome may contain 2 million to 4 million genes
||‘microbiome’ - the collective genome of our indigenous microbes. See Round & Mazmanian 2009 PMID 19343057 p.321 left column bottom paragraph: "Although it has been known for decades that we harbour millions of commensal bacteria, recent studies have only just begun to reveal the extraordinary complexity and diversity of the human microbiota. This consortium of bacteria contains tenfold more cells than the human body, 100 times the number of genes than the human genome and has the metabolic capacity of the human liver [refs 90, 91 therein]."