Global Dynamics of a Virus-Immune System with Virus-Guided Therapy and Saturation Growth of Virus

Figure 8

Phase plane of Filippov system (3) for Case with different threshold conditions. (a) The regular equilibrium and the boundary equilibrium are bistable, here ; (b) the pseudoequilibrium and the boundary equilibrium are bistable, here ; (c) the boundary equilibrium is globally asymptotically stable, here ; (d) the pseudoequilibrium is globally asymptotically stable. Parameter values are chosen as follows: , , and , and other parameter values are shown in Figure 5.

(a)

(b)

(c)

(d)