Examining a broader range of sarcoma cell lines (Supplementary Fig. S3a), levels of immunofluorescence staining concur with the CCLE expression (Fig. 2A) and western blotting (Fig. 2B) data and additionally demonstrate that Endo180 expression is homogeneous in the majority of cell lines, with only slight heterogeneity in staining intensity seen in SK-UT-1 and G-402 lines. Here, MRC2 is linked to sarcoma.