Objective The aim of this study was to explore the expression and the clinical significance in colorectal carcinoma.Methods The expression of mucin MUC2 and PCNA in 104 cases of colorectal carcinoma were detected by S-P immunohistochemical technique.Results The positive expression rates of mucin MUC-2 in normal colorectal mucosa was 100%,but the positive expression rates of mucin MUC-2 in 104 cases was 40.38%.Mucin MUC-2 and PCNA expression was related to invasion,lymph node metastasis and Dukes staging,but...