For Muc1 positive tumor cells, HT29, LS174T, or SKOV3, Muc1-Bi-1 alone had no cell killing activity at 1 μg/ml or 10 μg/ml (Figs 3B and 3C and 3D and 4B and 4C and 4D and 5B and 5C and 5D). Here, MUC1 is linked to neoplasm.