1. Overview of the literature 1. Protein tau and Alzheimer's disease 2. Protein tau 3. Frontotemporal dementia and parkinsonism linked to chromosome 17 (FDTP-17) Rationale and Aims 2. Materials and methods 3. Prominent anxopathy in the brain and spinal cord of transgenic mice overexpressing four-repeat human protein tau 4. Glycogen synthase kinase-3B phosphorylates protein tau and rescues the axonopathy in the central nervous system of human four-repeat tau transgenic mice 5. Human Glycogen Synthase Kinase-3B causes microcephaly in transgenic mice 6. Co-expression of juman cdk-5 and its activator p35 with human protein tau in neurons in brain of triple transgenic mice 7. Summary/samenvatting 8. References/publications