Fig. 4

The mitochondrial membrane potential (MMP) of T cells and B cells in the primary gastrointestinal cancer patients without anti-tumor treatments and healthy people. A The MMP level were detected by flow cytometric analysis. B The MMP level of T cells (CD3⁺CD19⁻) in the primary gastrointestinal cancer patients diagnosed for the first time and healthy people. C The MMP level of B cells (CD3⁻CD19⁺) in the primary gastrointestinal cancer patients diagnosed for the first time and healthy people. D The MMP level of PBMCs in the primary gastrointestinal cancer patients diagnosed for the first time and healthy people. Values in the graphs represent the mean ± standard deviation; the symbol (***) indicates a significant increase compared with the control group (P < 0.001)