Barry W. Hicks and a team of well-practiced experimentalists demonstrate the power and the versatility of the green fluorescent protein (GFP) marker with a cutting-edge collection of readily reproducible GFP techniques. These include methods for detecting and imaging GFP (FRET, BRET, and whole-body imaging); for using GFP to create and select for transgenic organisms, for its use as a biosensor; and for studying viruses. A valuable companion CD-ROM displays many color figures and videos from over half the chapters.