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Relationship between the IL-17A levels and the percentage of Foxp3+Tregs in the peripheral blood of COPD by SFC therapy. Statistical analysis showed that there were negative correlation between the diversity of the IL-17A levels and the variation percentage of Foxp3+Tregs in the peripheral blood of COPD after SFC therapy (r = -0.492, p < 0.05). Correlations were determined by Spearman's rank correlation coefficients.
