Fig. 10
From: Bistability and bifurcations in HIV-1 infection model with non-monotone responses

Endemic equilibrium phase portrait and time series for uninfected, infected, and effector cells population, where stable occurs at \(\epsilon =0.9\), and oscillation occurs at \(\epsilon =0.6\) for the initial condition \(T(0)=10^7, I(0)=1, E(0)=1.\).