Section I: Cell and Metabolic Disorders.- Regulation of Liver Growth: Protooncogenes and Transforming Growth Factors.- Mechanism of Mineral Formation in Bone.- Contractile Cells in Normal and Fibrotic Lungs.- Role of Folate Binding Proteins in Folate Metabolism.- New Insights into “The Riddle of the Mast Cells”: Microenvironmental Regulation of Mast Cell Development and Phenotypic Heterogeneity.- Section II: Inflammation and Immunity.- HLA Class II Polymorphism: Implications for Genetic Susceptibility to Autoimmune Disease.- Interleukin 6: A Multifunctional Cytokine Regulating Immune Reactions and the Acute Phase Protein Response.- IgA Nephropathy: Pathogenesis of the Most Common Form of Glomerulonephritis.- Goodpasture Syndrome: Molecular Architecture and Function of Basement Membrane Antigen.- Pathogenesis of Anti-Basement Membrane Glomerulopathy and Immune-Complex Glomerulonephritis: Dichotomy Dissolved.- Section III: Tumor Biology.- Molecular Mechanisms of Oncogenesis.- DNA Repair and Its Pathogenetic Implications.- Molecular Diagnosis of Human Cancer.- Role of Inhibition of Intercellular Communication in Carcinogenesis.- Comparative Study of Human and Rat Mammary Tumorigenesis.