Endoglin-mediated suppression of prostate cancer invasion is regulated by activin and bone morphogenetic protein type II receptors.

PLoS One · 2013 · PMC3742533 · PMID 23967299

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of borderline significanceno p-value reported

Smad5 appears to participate in these signaling events, but its impact is small and of borderline significance in the current system.

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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.