Offers an introduction for those entering into this area of research, while also serving as a resource for those presently employing mice as laboratory models. Highly comprehensive, this volume covers pertinent aspects of genetically engineered mice, including the use of models for developmental biology and the monitoring of laboratory colonies. With contributions from nearly five-dozen leading researchers, the text presents systematic approaches for analyzing mutant mice for specific medical applications, details a variety of methods for creating mutants and includes information that is particularly hard to access dealing with legal responsibilities.