Figure 4.

Stability analysis of the spiral point ${\displaystyle L}$ with respect to vascularization B. (A, B) Stability analysis of L with respect to the functional tumor-associated vasculature B for the immune recruitment rate ${\displaystyle r}$ equal to 0.54 and 0.06 days⁻¹, respectively. The labels S₁ and S₂ represent the bifurcation points, while the solid and dashed lines depict the stable and unstable solution branches, respectively. (C) Real part of the eigenvalues of the Jacobian estimated at the spiral point L with respect to B for r = 0.54 days⁻¹. (D) Real part of the eigenvalues of the Jacobian estimated at the spiral point L with respect to B for r = 0.60 days⁻¹.