The therapeutic efficacy of anticancer drugs can be achieved by enhancing the drug formulation with molecules that preferentially bind to tumor tissues [22, 26, 37, 41] . Phage display biopanning on intact cell allows for the isolation of highly specific peptides that target tumor-associated antigens. Anti-cancer regimens armed with these peptides can be used as ''cruise missiles'' that are precisely guided to the cancer cells and deliver high enough doses to kill these cells with minimal damage to normal tissues.