The journal publishes papers on the science and technology of the controlled release and delivery of drugs and other agents. The terms "controlled release" and "delivery" are used in their broadest sense to include mechanisms such as diffusion, chemical and enzymatic reactions, dissolution, osmosis, targeting, and the utilization and manipulation of biological processes. A broad spectrum of papers dealing with all aspects of controlled release and delivery, including gene delivery, tissue engineering and diagnostic agents, is encouraged. The use of prodrugs and carriers such as water-soluble polymers, micro- and nanoparticles, liposomes and micelles is included in the scope. Relevant papers on the toxicology and biocompatibility of drug delivery systems are also published. In addition to original full length papers, notes, reviews and rapid communications, the journal includes book reviews, reports of future meetings, and announcements pertaining to the activities of the Controlled Release Society.