Figure 17
From: Mathematical modeling of solid cancer growth with angiogenesis
Qualitative behavior of g ( T ). Qualitative behavior of g(T), for small β1 β2 (weak interaction): T g is the greatest root of g1(T), with three positive solutions (a), and one solution (b); T g is between the roots ε/μ5 and k3, with three positive solutions (c); and T g is the smallest root of g1(T), with three positive solutions (d). T1 and T2, the roots of g1(T), stand for ε/μ5 and k3.