MAL2 and MUC1 co-localise in the cytoplasm of breast carcinoma cell lines. Indirect immunofluorescent analyses were carried out using the cell lines indicated to the left of each row, and MUC1 and sheep MAL2 antisera. MUC1 antibody was identified as green color using a FITC-conjugated secondary antibody (left column) and MAL2 antisera was identified as red color using a Cy3-conjugated secondary antibody (middle column). Overlap between MUC1 and MAL2 proteins is shown as yellow in merged images (right column). Results shown represent those obtained from 3–4 independent experiments.