Fig. 4

FMT could increase the number of immune cells in peripheral blood of tumor-bearing mice. A The immunohistochemical staining of PD-L1 expression (400× magnification; scale bar = 20 μm). B PD-L1 levels were detected by immunohistochemical staining. Differences in cDC1 cells (C), cDC2 cells (D), CD4⁺ T cells (E) and CD8⁺ T cells (F) in peripheral blood detected by flow cytometry. Data are represented as means ± SDs, n = 5. One-way ANOVA was used for comparisons between multiple groups. ns, not significant, *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001