A phage display library is one of the most powerful technologies used in modern antibody discovery and protein engineering. It enables researchers to identify peptides, antibodies, and proteins with high affinity toward specific targets through an efficient and high-throughput screening process. This technology has significantly accelerated biologics research by enabling rapid candidate selection for therapeutic development. What is a Phage Display Library? A phage display library consists of bacteriophages genetically engineered to express diverse peptides or antibody fragments on their surface. These displayed molecules can then be screened against target antigens to identify high-affinity binders. Since billions of variants can be screened simultaneously, this method is highly efficient for selecting therapeutic candidates and optimizing antibody performance. Applications of Phage Display Library Phage display libraries are widely used in antibody discovery, vaccine develo...