The percentage of TLR2+ cells within CD3+CD8+ T cells in peripheral bloods (31.67 ± 8.84%) and tumor residency (24.37 ± 2.72%) of GC patients was notably lower than in peripheral bloods of NCs (50.96 ± 5.45%) (LSD-t tests, P < 0.0001, Fig. 2b). Here, TLR2 is linked to neoplasm.