In the late 1980s, Dyax scientists invented and patented phage display. This novel method allows up to tens of billions of peptides and proteins, including human antibodies and enzymes, to be individually displayed on the surface of a small bacterial virus called a phage. Phage display enables Dyax to produce and search through large collections, known as libraries, of peptides and proteins to rapidly identify compounds that bind with high specificity and affinity to targets of interest.

Dyax maintains four different types of libraries.

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