The Role of ?-Synuclein in Parkinson's Disease: A Biophysical Analogy to A? and Alzheimer's Disease.- Purification of Lewy Bodies and Identification of ? -Synuclein as a Major Component of Lewy Bodies.- Mutational Analysis of Tau in Chromosome 17-Linked Dementia.- Missense and Splice Site Mutations in Tau Associated with FTDP-17: Multiple Pathogenic Mechanisms.- Tau Mutations: Genetics and Pathogenetic Mechanisms.- Tauopathies and ?-Synucleinopathies.- Distinct Tau Gene Mutations Induce Specific Dysfunctions/Toxic Properties in Tau Proteins Associated with Specific FTDP-17 Phenotypes.- Neurodegenerative Disorders with Tauopathies: Mad Tau Diseases?.- Tau Protein: Role in Intracellular Traffic and Development of Cell Polarity.