Viral Vectors for Gene Therapy: Methods and Protocols consists of 30 ch- ters detailing the use of herpes viruses, adenoviruses, adeno-associated viruses, simple and complex retroviruses, including lentiviruses, and other virus systems for vector development and gene transfer. Chapter cont- butions provide perspective in the use of viral vectors for applications in the brain and in the central nervous system. Viral Vectors for Gene Therapy: Methods and Protocols contains step-by-step methods for successful rep- cation of experimental procedures, and should prove useful for both experienced investigators and newcomers in the field, including those beginning graduate study or undergoing postdoctoral training. The "e;Notes"e; section contained in each chapter provides valuable troublesho- ing guides to help develop working protocols for your laboratory. With Viral Vectors for Gene Therapy: Methods and Protocols, it has been my intent to develop a comprehensive collection of modern molecular methods for the construction, development, and use of viral vectors for gene transfer and gene therapy. I would like to thank the many chapter authors for their contributions. They are all experts in various aspects of viral vectors, and I appreciate their efforts and hard work in developing comprehensive chapters. As editor, it has been a privilege to preview the development of Viral Vectors for Gene Therapy: Methods and Protocols, and to acquire insight into the various methodological approaches from the many different contri- tors.