Tumor/immune system competition with medically induced activation/deactivation

This paper deals with further developments of the kinetic modelling of the cellular dynamics of tumors interacting with an active immune defence syste m in the presence of cytokine signals. The contents is developed in the fra mework of the so-called cellular kinetic theory which leads to a modelling based on methods which are similar to those of nonlinear statistical mechan ics. The model proposed here takes into account spontaneous activation of t umor cells and the effects of medical therapies aimed at deactivating the t umor and/or activating the immune system. The simulation presented shows th at the possible scenarios that can be reproduced by the model are those exp erimentally observed.