Fig. 21.

Snapshots of 2D CPM simulation of the NC model. Visualized is Rac (u) that promotes protrusions ($H_0=\pm \beta u$). Snapshots in A,B,C are 10,5,25 MCS apart respectively. Arrows indicate examples of interesting dynamics. a a spot breaks into two, b a new spot is created in a protrusion, c a spot leads a protrusion to form. Parameters are: $\delta =0.1$, $\eta =60$, $k=6$, $\gamma =120$, $\theta =18$, $\alpha =6$, and the rest from Table 4 (NC). CPM Parameters are: $a=10000$, ${\lambda }_a=0.02$, $p=1000$, ${\lambda }_p=0.04$, $J=40$, $r=3,\xi (r)=18$, $\beta =200$, $T=20$. Movie link https://imgur.com/yUUEgQD