Expression and significance of pigment epithelium-derived factor and vascular endothelial growth factor in colorectal adenoma and cancer

Figure 6 CD31-stained microvessel density values and correlation analysis. A: Difference of CD31-stained microvessel density values (CD31-MVD) value in normal group, adenoma group, and colorectal cancer (CRC) group; B: Correlation between pigment epithelium-derived factors (PEDF) and CD31-MVD value in adenoma group; C: Correlation between vascular endothelial growth factors (VEGF) and CD31-MVD value in adenoma group; D: Correlation between PEDF and VEGF in CRC group; E: CRC group Association between PEDF and CD31-MVD value in CRC; F: Association between VEGF and CD31-MVD value in CRC. CD31-MVD: CD31-stained microvessel density values; PEDF: Pigment epithelium-derived factors; VEGF: Vascular endothelial growth factors.