RSPO3 and neoplasm: p-value < 0.05): RSPO3+ (40 cells), fibroblast-like (287 cells), proliferating (337 cells), S-phase (135 cells), proliferating myoblast-like (21 cells), myocyte-like (191 cells), MEST+ (339 cells), and LENG8+ TCs (241 cells; Figure 2F,G; Table S2, Sheet 1, pRMS tumor clusters; Table S3, Sheet 3, cell counts).