Fig. 1: High expression of CXCL5 and CD31 in CRC tissues.

a, d Immunohistochemistry images showing that CXCL5 is highly expressed in tissue microarray. b, e Immunohistochemistry images showing that CD31 is highly expressed in tissue microarray. c, f Correlation between CXCL5 and CD31 expression. CD31 expression is positively related with CXCL5 expression (r = 0.6392). Scale bars, 200 μm (magnification ×40) and 50 μm (magnification ×200). Data represent the mean ± SD, *P < 0.05, **P < 0.01, ***P < 0.001