Combined with H&E staining and ST, we found that TS-C6 was circled by myCAFs (TS-C2, Figure 6B) and expressed FAP [fibroblast activation protein alpha, a marker of CAFs (25)] and KRT5 (keratin 5, Figures 6G, H), which provided evidence that this cluster is a mixture of tumor cells and CAFs. Here, FAP is linked to neoplasm.