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The concentrations of different cytokines in malignant effusion and blood. The supernatant of malignant effusion and blood were prepared and the concentrations of IL-2/IL-4/IL-6/IL-10/TNF-α/IFN-γ were determined by flow cytometry (A). Statistical results from 15 independent experiments were shown as mean±SEM, and the statistical significance was determined with the Mann-Whitney U test. NS, no significance, **<0.01, ****P < 0.0001.
