Peptide and protein drug delivery research has been moving at a brisk pace for over 10 years. This is the fourth volume in the Drug Targeting and Delivery book series is a collection of selected snapshots of the major past and future developments in this exciting field as seen by over 20 invited speakers at a three-day conference on protein drug delivery held on 2-4 September 1995 in Kyoto, Japan. The wide-ranging topics examined included polymeric delivery systems for protein drugs, means of enhancement of protein drug transport, protein modification for improved pharmacokinetic/pharmacodynamic properties, targeting of peptide and protein drugs, and delivery of oligonucleotidcs and genes.