THY1 and sarcoma: Additionally, this cluster expressed Thy1, encoding the surface protein CD90 (Fig. 2a, b and Supplementary Fig. 2a), which aligns with previous reports of CD90 as a CAF marker in pancreatic and breast tumors39,40; accordingly, we observed that 87.9% of cells in the cluster annotated as CAF express Thy1, thus providing us with the rationale to adopt CD90 as a CAF enrichment marker for sarcoma for further CAF characterization and functional studies.