Assembly-driven community genomics of a hypersaline microbial ecosystem.

PLoS One · 2013 · PMC3630111 · PMID 23637883

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possibly significantno p-value reported

However, even confidently annotated proteins sometimes generate multiple clusters with similar descriptions, and may correspond to protein isoform variants with unknown but possibly significant differences in biological activity.

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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.