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Molecular detection (k-ras) of exfoliated tumour cells in the pelvis is a prognostic factor after resection of rectal cancer?

BMC Cancer · 2008 · PMC2525659 · PMID 18655729

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a possible trendno p-value reported
In our study there was no significant difference in estimated survival, but a possible trend observed between patients with k-ras positive and k-ras negative tumor markers in the solid tumor samples.

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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.