Escherichia coli K-12
Escherichia coli K-12 is a well-studied non-pathogenic laboratory strain of E. coli widely used in molecular biology, genetics, and fermentation research since the 1940s. The indexed research reflects its role as a model organism — covering motility regulation, gene mapping, competitive colonization in mouse intestines, and fermentation acid tolerance — rather than probiotic application. One regulatory review noted that certain K-12 derivatives are approved for producing human milk oligosaccharides (e.g., 3-fucosyllactose) as novel food ingredients, and historical vaccine research used K-12 hybrid constructs. K-12 itself is not a commercial probiotic strain, though some E. coli-derived preparations (such as Nissle 1917) with distinct designations have established probiotic evidence bases.
Where it's been studied Tags come from a conservative keyword scan of each paper's title, abstract, and summary. A tag is research coverage, not measured effect. How we classify this →
Share of this strain's 270 body-system-tagged papers that concern each system. Research coverage, not measured effect.
+2 more systems
Symptoms in the research A tag means the paper's text names the symptom or condition — research coverage, not evidence of benefit. How we classify this →
Share of this strain's 89 symptom-tagged papers that mention each symptom or condition. Research coverage, not evidence of benefit.
Research Study-type filters use AI-classified labels, audited but not guaranteed — check the paper itself before leaning on one. How we classify this →
848 papers reference this strain in the probiotic database.
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