Figure 11From: Mathematical analysis of a cancer model with time-delay in tumor-immune interaction and stimulation processesTime evaluation curve and three-dimensional phase portrait of the system for the parameter values \(a_{1}=0.4\), \(a_{2}=0.6\), \(a_{3}=3.5\), \(a_{4}=7.0\), \(\Delta =0.01\)Back to article page