Answers are grounded in this paper and cite their sources.
Methanogens were in the isolated sigmoid colon but not in the colostomy bag of a woman with a left hemicolectomy with end colostomy and mucous fistula. The predominant methanogen was Methanobrevibacter smithii. An anaerobic bacterial community supported by nondietary substrates was present in the isolated sigmoid colon.
No takes yet. Share an insight, caveat, or question.
Miller et al. (1984) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: