- Nonapeptides selected by phage display mimic the binding sites of monoclonal antibodies BIP1 and BIP4 on Bet v 1, the major birch pollen allergen. Jensen-Jarolim, E., Ganglberger, E., Leitner, A., Radauer, C., Scheiner, O., Breiteneder, H. Int. Arch. Allergy Immunol. (1999)