I. Stability and Persistence for Ecological Models.- Stability Conditions for Two Predator One Prey Systems.- A Unified Approach to Persistence.- Reflections and Calculations on a Prey-Predator-Patch System Problem.- A Homotopy Technique for a Linear Generalization of Volterra Models.- Cooperative Systems Theory and Global Stability of Diffusion Models.- II. Selection and Evolutionary Games.- The n-Person War of Attrition.- Mutation-Selection Models in Population Genetics and Evolutionary Game Theory.- III. Demography for Structured Opulations.- Pair Formation in Age-Structured Populations.- The Markov Structure of Population Growth.- IV. Mathematical Models of the Immune Response.- On a Generalized Mathematical Model of the Immune Response.- Recent Results in Mathematical Modeling of Infectious Diseases.- Applications of the Mathematical Model of Immunological Tolerance to Immunoglobulin Suppression and AIDS.- Distribution of Recirculating Lymphocytes: A Stochastic Model Foundation.- V. Simulation and Control in Medicine.- Recent Progress in 3-D Computer Simulation of Tumor Growth and Treatment.- Mathematical Simulation of the Immunomodulating Role of Energy Metabolism in Support of Synergism and Antagonism of the Compartments of an Immune System.- Interleukin 2 and Immune Response Control Mathematical Model.