Chaos in a Tumor Growth Model with Delayed Responses of the Immune System

Figure 1

Three-dimensional phase portrait depicting stable dynamics of the model (2.4) for 𝑇=0.34. The trajectory spirals and approaches to 𝐸₃ starting from the initial point 𝑥₁(0)=1,𝑥₂(0)=1,𝑥₃(0)=1.