Abstract
The immune system is investigated as a complex adaptive network. A nonlinear dynamical model is proposed to study roles of lymphocyte and antibody in the regulation of the immune response. Three kinds of lymphocytes; B cell, TH cell, and TS cell, interact and compose a functional unit. Furthermore this unit interacts with other units through antibodies. These two types of interactions cooperatively work and regulate the immune response. The model can explain how the memory state is formed and stabilized in the immune network. Behaviors of the model are verified by the computer simulations.
