MA5-11202 detects smaller subunits (14-28kDa) of MUC-1. Muc-1 is overexpressed in Breast cancer cells. T47D cell lysate could be used as a positive control. MUC1 (Mucin 1, Episialin, MAM-6, CA 15-3, PEM and EMA) is a large cell surface mucin glycoprotein