MUC2 and colorectal carcinoma: Western blot was used to detect the levels of CRC‐specific proteins (COX2 and MUC2) and apoptotic proteins (Bax, Cleaved‐caspase3 and Bcl2); it was found that CRC mice showed increased protein levels of COX2, MUC2, Bax and Cleaved caspase3, and decreased Bcl2 level (Figure 2H).