COL1A1 and cancer: Through this analysis, we identified eight major cell types, namely B cell (CD79A), cancer cell (KRT5), cycling cell (MKI67), endothelial cell (VWF), fibroblast (COL1A1), mast cell (KIT), monocyte/macrophage (CD14) and T cell (CD3D) (Figure 1A,B, Table S1).