Figure 1From: Mathematical analysis of a cancer model with time-delay in tumor-immune interaction and stimulation processesA bifurcation diagram showing X as a function of \(a_{1}\). Parameter values are \(a_{1}=0.3\), \(a_{2}=0.6\), \(a_{3}=4\), \(a_{4}=10\), and \(\Delta =0.05\)Back to article page