This volume provides an introduction to the essential techniques required for studying the molecular biology of brain disease. The approaches and strategies for investigations of gene structure and regulation are described with reference to the molecular genetics of prion and Alzheimer’s disease. The effects of aberrant gene regulation can also be examined at the protein level by immunocytochemistry and autoradiography. Improved understanding of basic biology has resulted in new approaches to animal models using transgenic techniques and new therapeutic approaches. The volume is structured to illustrate all these approaches and demonstrate the practice and promise of molecular neuropathology.