Nasal epithelial cells can act as a physiological surrogate for paediatric asthma studies.

PLoS One · 2014 · PMC3903489 · PMID 24475053

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did not reach statistical significanceno p-value reported

IL-13 stimulated PNECs and PBECs secreted higher levels of IL-8 compared with unstimulated PNECs and PBECs however they did not reach statistical significance.

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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.