CD274 and malignant colon neoplasm: The CT26 colon cancer mouse transplantation tumor model was established, and various treatments were administered to the PBS control group, the MMW irradiation group (MMW alone), and the MMW combined with α-PD-L1 treatment group (MMW + α-PD-L1) according to the timeline illustrated in Fig. 10A. The tumor growth curves (Fig. 10B) indicate that compared to the control group, the MMW group significantly inhibited tumor enlargement, with an even greater inhibition observed in the MMW + α-PD-L1 group.