Figure 2.
Fast virus spread. The function G(x, y(x)) (equations (3-4)) for the particular choice of the virus spread law (G(x, y) = x/(x + y + 1)) and three different laws of cancer growth: exponential, surface growth and linear growth. The solid lines correspond to the unlimited cancer growth; the dotted lines - to a growth up to a given size, W. The parameters are: a = 1, η = 10 and W = 104.
