The early days of neuropathology in the United States (H.M. Zimmerman). The promise of confocal laser scanning microscopy (R.D. Terry, E. Masliah). Neuronal pathology and dementia in Alzheimer's disease and related disorders (F. Seitelberger et al.). From microtubule-associated protein tau to paired helical filaments and Alzheimer neurofibrillary tangles: An overview (S.-H. Yen et al.). Microglia in Alzheimer's disease and the acquired immunodeficiency syndrome (D.W. Dickson, K. Kure, L.A. Mattiace). Human immunodeficiency virus infection of the brain: An ultrastructural study (S.S. Mirra, M.L. Miles). Bovine spongiform encephalopathy: A new disease joining the group of transmissible spongiform encephalopathies (J.T. Hughes). Regeneration of myelin in the human central nervous system (N.R. Ghatak). Pathology of Niemann-Pick type C: Studies of murine mutants (Y. Higashi et al.). Organelle-specific antibodies in cell and molecular biology: Applications in neuropathology (N.K. Gonatas, J.O. Gonatas). Nucleocytoplasmic progression in the neurons and anteroposterior extension in the spinal gray matter of lesions in amyotrophic lateral sclerosis (K. Oyanagi et al.). Motor neuron disease: Two forms of Bunina body revealed by a method for ultrastructural study of conventional histological sections (H. Takahashi, E. Ohama, F. Ikuta). Lewy bodies in the visceral autonomic nervous system in Parkinson's disease (K. Wakabayashi et al.). Development and degeneration of the Purkinje cells in man: An immunohistochemical study using a cerebellar spot 35 protein (E. Ohama et al.). Pigmentary progressive myoclonus epilepsy: A variant of degenerative-type progressive myoclonus epilepsy with a pattern of autosomal recessive inheritance (S. Takeda et al.). Pituitary adenomas: An ultrastructural, immunohistochemical and immunoelectron microscopic study (S. Roy, C. Sarkar, A.K. Dinda). Benign cysts in the central nervous system: Light and electron microscopic observation of cyst walls (A. Hirano, M. Hirano). Primary malignant lymphomas of the central nervous system (K.A. Jellinger). Cell-specific tumor induction in neural grafts by retrovirus-mediated oncogene transfer (P. Kleihues et al.). The process of brain lesion repair and activity of astrocytes (F. Ikuta). Index of Authors. Subject Index.