Co-immunoprecipitation analyses verifying interactions between MAL2 and MUC1. Total cell lysate from MCF-10A/Myc-MAL2 cells was immunoprecipitated with MUC1, c-Myc, or rabbit MAL2 antisera, either alone or with MAL2 peptides, as indicated above the top panel. Total cell lysate and immunoprecipitates were separated by SDS-PAGE and subjected to Western blot analyses with antisera against MUC1, MAL2, c-Myc and D52, as indicated at the left. Sizes of detected proteins are indicated at the right. Results shown are representative of at least 3 independent experiments.