Covering a broad spectrum of methods of drug delivery and focusing on the use of polymers and materials, this volume presents new materials and methods for controlled drug release. Emphasizing selection of materials for drug delivery rather than just reviewing current methods, the editors challenge researchers to venture into new areas and consider new methods. Included is an examination of recent advances in biodegradable and bioerodible polymer matices for drug delivery. An introductory section of four tutorial chapters ("Biologically Active Polymers", "Polymeric Matrices", "Liposomes", and "Interactions Between Polymeric Drug Delivery Systems and Biological Systems") will be of great value to those just entering the field.