Drs. Peng Liang and Arthur B. Pardee assemble for the first time a comprehensive review of the state of the art of their powerful new methodology and practical applications. The book's pioneering contributors describe all the major elements of this novel technology, including both RAP-PCR and DD using fluorescence detection, as well as their powerful strategy for identifying and cloning family-specific genes. They also provide numerous examples in which differentially expressed genes were successfully identified in diverse biological systems ranging from plants to songbirds to humans.