InhaltsangabeList of Contents.- Why I Think the Chicken Should Survive in Immunology and Developmental Biology.- Postrearrangement Diversification Processes in Gut-Associated Lymphoid Tissues.- Current Concepts in Chicken B Cell Development.- Evidence for Phenotypic Heterogeneity Among B Cells Emigrating from the Bursa of Fabricius: A Reflection of Functional Diversity?.- T Cell Receptors and T Cell Development.- Chicken ?? T Cells.- T Cell Subsets and the Activation of ?? T Cells.- T Cell Migration During Ontogeny and T Cell Repertoire Generation.- The Avian Model in the Study of Tolerance to Self.- Avian Natural Killer Cells.- Ontogeny of Hematopoiesis in the Avian Embryo: A General Paradigm.- Chicken MHC Molecules, Disease Resistance and the Evolutionary Origin of Birds.- Acute Avian Leukemia Viruses as Tools to Study Hematopoietic Cell Differentiation.- Control of the Differentiation Commitment by Nuclear Hormone Receptors in Chicken Erythrocytic Progenitor Cells.- Cell Cycle Regulation and Erythroid Differentiation.- Chick Stem Cells.- Modulations of Cellular Interactions During Development of the Neural Crest: Role of Growth Factors and Adhesion Molecules.- Establishment of Pathways in the Developing Neural System.- Limb Development.