Expression of ESCC-related miRNAs and proteins. A: The expressions of six miRNAs (miR-134, miR-10a, miR-29c, miR-942, miR-93 and miR-218) in normal esophageal tissue and ESCC tissues. B: The protein expression of MMP-2, MMP-9, COL1A1, COL1A5 and FOXM1. ESCC: esophageal squamous cell carcinoma. *P<0.01 compared with normal control.