The percentage of positive KAI1/CD82, CD44 and MMP7 were different between “normal” mucosa and CRC (P < 0.05) (date not shown); In our study, β-catenin expression was detected on the membrane or nucleus and on the cytoplasm of the CRC cells, although we considered the mutant expression (in the nucleus and cytoplasm) as positive expression [17, 18] (Fig. 1g,, h and i) and β-catenin expression was detected in 129 (74.1 %) specimens. This evidence concerns the gene MMP7 and colorectal carcinoma.