. However, this approach is suboptimal for glycosylated proteins such as the HIV-1 envelope glycoprotein or the influenza virus hemagglutinin (HA). Consequently, an alter-native display approach has therefore been developed which allows one to “decorate” preformed, gpD-deficient phage with exogenously supplied gpD or recombinant gpD-fusion proteins, produce din eukaryotic cells (Mattiacio et al., 2011