Figure 7.

Graphical sensitivy analysis on the parameter $k_{AC}$, representing the maximal killing rate of tumor by CTL due to the drug ipilimumab. Blue, orange and yellow lines represent, respectively, the model dynamics by setting the value of $k_{AC}$ as 5.44 (the original estimate), 2.72 ($\frac{k_{AC}}{2}$) and 1.81 ($\frac{k_{AC}}{4}$). The ipilimumab threshold has been highlighted with a black dotted line.