Immunogen sequence: AVCQCRRKNY GQLDIFPARD TYHPMSEYPT YHTHGRYVPP SSTDRSPYEK VSAGNGGSSL SYTNPAVAAT SANL. MUC1 (Mucin 1, Episialin, MAM-6, CA 15-3, PEM and EMA) is a large cell surface mucin glycoprotein expressed by most glandular and ductal epithelial cel