Figure 1From: Dynamical behaviors of an HTLV-I infection model with intracellular delay and immune activation delay Behavior and phase portrait of system ( 4.3 ) with values as in Table 1 . \(\omega =0.05\) in (a); \(\omega=0.3\) in (b); \(\omega=0.7\) in (c); \(\omega=0.9\) in (d). By Theorem 4.2, we know that a Hopf bifurcation occurs from the HAM/TSP equilibrium. The initial value is \((942, 5.97, 0.15)\).Back to article page