A review.Phage display is a well-established approach for the identification of bioactive peptides and antibody fragments through the use of high diversity libraries.One major advantage of phage display lies in its ability to rapidly identify target-specific reagents with pharmacol. activity as agonists or antagonists.Peptides and antibodies have several clin. advantages over traditional small-mol. chemotherapeutics, including specificity, selectivity, and potency.Thus, phage display can be used to generate targeted therapeutics, which is the current clin. paradigm of choice in the field of oncol.