Opposing effects of final population density and stress on Escherichia coli mutation rate.

ISME J · 2018 · PMC6230470 · PMID 30087411

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highly significantno p-value reported

coli displays a substantial and highly significant decrease in mutation rate associated with final population density, much more so than the related bacterium Pseudomonas aeruginosa PAO1.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.