Szukana fraza: [Abstract = "A system of two non\-linear ordinary differential equations was used to describe the dynamic process of interaction between the immune system and the tumour. Three different types of stimulation functions were considered\: \(a\) Lotka\-Volterra interactions, \(b\) switching functions dependent on the tumour size in the Michaelis\-Menten form, and \(c\) Michaelis\-Menten switching functions dependent on the ratio of the tumour size to the immune capacity."]