Silicone Gels as Adjuvants: Effects on Humoral and Cellmediated Immune Responses; J.O. Naim, C.J. van Oss The Effect of Molecular Weight and Gel Preparation on Humoral Adjuvancy of Silicone Oils and Silicone Gels; J.O. Naim, C.J. van Oss Glucans as Immunological Adjuvants; N. Mohagheghpour, et al. Copolymer Adjuvants; R.N. Brey Regulation of Il4 and Il5 Secretion by Histamine and PGE2; M.M. Khan Immunoglobulin Isotype Modulation after Administration of Il12; V. Van Cleave, et al. Substance P Mediated Stimulation of Cytokine Levels in Cultured Murine Bone Marrow Stromal Cells; J.M. Manske, et al. Malaria Transmissionblocking Immunity: Identification of Epitopes and Evaluation of Immunogenicity; N. Kumar, et al. Experimental Feline Lyme Borreliosis As a Model for Testing Borrelia burgdorferi Vaccines; M.D. Gibson, et al. Liposoma Vaccines; S. Green, et al. Protection Strategies against Botulinum Toxin; L. Middlebrook Collagen Arthritis in T Cell Receptor Congenic Mice: A Unique Approach to Study the Role of T Cell Receptor Genotypes in Autoimmune Arthritis; G.H.H. Nabozny, C.S. David The Blood-Brain Barrier in Virusinduced Demyelination; C.J.R. Welsh, et al. 14 additional articles. Index.

This volume summarizes the proceedings of the Eighth International Symposium on the Immunobiology of Proteins and Peptides which was held on November 16-20 in Rio Rico, Arizona. The articles represent papers by invited speakers as well as papers selected by the Scientific Council, from among those submitted by the participants, on the basis of quality and timeliness. This symposium series was established in 1976 for the purpose of bringing together, once every two or three years, active investigators in the forefront of contemporary immunology, to present their findings, discuss their significance in the light of current concepts and identify important new directions of investigation. The founding of the symposium was stimulated by the achievement of major breakthroughs in the understanding of the immune recognition of proteins and peptides. We believed that these breakthroughs would lead to the creation of a new generation of peptide reagents, which could have enormous potential in biological, therapeutic, and basic applications. This anticipated explosion has since occurred and many applications ofthese peptides are now being realized. The eighth symposium focused on the manipulation or modulation of the immune response. This volume broadly covers the areas of adjuvants, cytokines, vaccines, and the use of intravenous immunoglobulins for disease management. There is a clear need to identify methods for improving vaccine efficacy and guiding the host to respond with a particular type of immune response.