MUC1 is the only mucin that is an integral membrane protein composed of core peptide and carbohytrate side chain expressing on normal epithelia cells and carcinoma cells.

• MUC1是mucin粘蛋白家族成员，存在于正常腺管上皮细胞及其来源的肿瘤细胞表面，由多肽核心和侧枝糖链构成。