FIG. 2.
(Color online) Results obtained from direct simulation of the cellular automaton when Lx = Ly = L = 1001, θnec = 0.03, θdiv = 0.3, θmig = 1000, a = 1/L, λN = 25, and λM = 25. Here, we show snapshots of the tumor cell distribution at dimensionless times: (a) t = 100, (b) t = 500, and (c) t = 1000. The growing tumor exhibits a (coarsely) radially symmetric shape on the coarse scale. See text for additional details.