CD27 and neoplasm: Moreover, the proportion of CD8+CD45RA+ cells was slightly higher in the hCT3 AbTCR T cell group (3.2%) relative to CT3 CAR (1.75%) and CT3 AbTCR (2.99%) T cells (Figures 4L and 4M).These findings suggest that the hCT3 AbTCR T cell group elicited a stronger cytotoxic T cell response, characterized by higher CD8+ T cell infiltration and a greater proportion of activated CD8+CD27+ T cells within the tumor microenvironment.