High PD-L1 Expression Correlates with Metastasis and Poor Prognosis in Oral Squamous Cell Carcinoma.

PLoS One · 2015 · PMC4642967 · PMID 26562534

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a trend toward significanceno p-value reported

Distal metastasis and pathologic grading were not significantly associated, but these clinicopathological characteristics had a trend toward significance ( Table 3 ).

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