COL3A1 and gastric cancer: The proportions of T&NK (CD3E and CD3D), myeloid (ITGAM and CD11b), B cells (CD19 and CD79B), plasma cells (CD27 and CD38), fibroblasts (DCN and COL3A1), and endothelial cells (VWF and CDH5) increased significantly during GC progression (Figure 1A).