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(a, c) Spearman correlation analysis showed a positive correlation among the CD4+T cells and CD8+T cells with Foxp3+T cells in tumor tissues (p < 0.05); (b, d) no considerable or pronounced correlation was observed between CD4+T: Foxp3+T cells and CD8+T: Foxp3+T cells in normal adjacent tissues (p > 0.05).
