Figure 2D shows an example of tumor tissue from the 27th day after tumor inoculation in the two groups of treated mice. Furthermore, the tumor tissues were weighed, which revealed that the tumor weight of the Re-FMT + αPD-1 combination treatment group was 0.4 times higher than that of the No-FMT + αPD-1 combination treatment group (Figure 2E). Moreover, Ki67 was significantly underexpressed, and P53 was significantly overexpressed in the Re-FMT with αPD-1 combination treatment group (Figures 2F, G). The gene discussed is MKI67; the disease is neoplasm.