1. Comments on Dynamic Complexity Charles DeLisis and Jacques Hiernaux 2. Cyclic Antibody Production in Immune Regulation Carole G. Romball and William O. Weigle 3. Cycling Antibody: Role of Antigen Retaining Follicular Dendric Cells and Antibody Feedback Regulation John G. Tew and Richard P. Phipps 4. The Mathematical Analysis of Augmentable Plaque-Forming Cells: A Quantitative Method for Monitoring the Total Number if Antigen-Specific Lymphocytes Charles DeLisis and Jacques Hiernaux 5. The Role of Anti-Idiotic T Cells in the Cyclical Course of an Antibody Response Jan Cerny 6. Inverse Fluctuation of Idiotypes and Anti-Idiotypes During the Immune Response Constantin A. Bona 7. Idiotypical Regulation and Allotypical Restriction in the Immune Response of Rabbits to Salmonella Antigens Akira Seto 8. The Biological Significance of Silent Idiotype Clones Daniele Primi, Dominique Juy, and Pierre-Andre Cazenave 9. Oscillatory Immune Response to Lippopolysaccharide Jacques R. Hiernaux, Philip J. Baker, and Charles DeLisi 10. The Application of Stability Criteria in Evaluating Network Regulation Models. Geoffrey W. Hoffman