Altered Protein Structure and Enhanced Aggregation/Deposition.- The Pathogenesis of Alzheimer's Disease: General Overview.- Free Radicals, Metal Ions, and A? Aggregation and Neurotoxicity.- Progress in Understanding the Mechanisms of Neuronal Dysfunction and Degeneration in Parkinson's Disease.- ?-Synuclein Aggregation and Parkinson's Disease.- Cell Biology of ?-Synuclein: Implications in Parkinson's Disease and Other Lewy Body Diseases.- Pathogenesis of Prion Diseases.- Mammalian Prion Protein.-... Mehr