Additionally, COL1A1 and FBLN1 were previously used as markers for canine tumor or fibroblast cells (22), and MMP2 and DCN as markers of mesenchymal-like cells in human cancers (37, 38), with the latter also being a top differentially expressed gene in our canine STS sample (Figure 1E). The gene discussed is COL1A1; the disease is neoplasm.