Combined oral administration of L-arginine and tetrahydrobiopterin in a rat model of pulmonary arterial hypertension.

Pulm Circ · 2017 · PMC5448548 · PMID 28680568

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failed to reach statistical significanceno p-value reported

Although the observed effect was more pronounced than in the LA group, it failed to reach statistical significance at this dose and was also not apparent in the group receiving combined treatments.

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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.