Transition Yet Energy Consuming for Tumor Growth Regulated by the Colored Microenvironment

Figure 4

Extrema of the steady distribution of the model (19) subjected to the noise only in the immune rate , i.e., only multiplicative noise is considered. (a) For a fixed AT  = 0.01, increasing the NS from 0.2 to 2 to 4 (from red line to green line to blue line); (b) for a fixed NS , increasing the AT from 0.01 to 1 to 10 (from green line to blue line to red line). The other parameter value is  = 0.1 s⁻¹copy⁻¹, and the dashed line denotes an unstable attractor.

(a)

(b)