Objective To study the significance of matrix metalloproteinase-7(MMP-7) gene with invasion and metastasis in Kazak's esophageal cancer.Methods The expression of MMP-7 gene mRNA was detected in tissues of 20 cases with esophageal cancer and tumor-adjacent normal tissues by reverse transcription polymerase chain reaction.Then the expression of MMP-7 protein was detected in some samples with difference in transcriptional level by western-blotting.Results The overall positive rate of MMP-7 gene mRNA expression...