Because of the favorable selectivity and specificity, ligandconjugated liposomal anticancer drugs are a promising approach for new chemotherapy research. The use of peptides as ligands to direct liposomes to tumors represents a potentially feasible method for increasing the specificity and effectiveness of liposomecontaining drugs [26, 30] . Phage display is a technique of selecting targeting peptides, in which a peptide is expressed on the surface of a bacteriophage as a fusion-protein with one of the virion's own coat proteins [31] . Phage-displayed peptide libraries allows researchers to map protein-protein contacts such as B-cell epitopes [32] [33] [34] [35] and receptor-ligand interactions [36] . Such peptide libraries can also be used to identify organ-and cell-type-specific peptides [26, 27, [37] [38] [39] .