Figure 4

Plots of \(\tau \), the mean time for the formation of wave distortions (WDs), versus \({p}_{f}\). The variation of \(\tau \) with the percentage \({p}_{f}\) of fibroblasts, in the clump, for clump radii R = 0.6 cm (blue curve), 1 cm (red curve), and 2 cm (black curve); we obtain errors bars from the standard deviation of \(\tau ^{\prime} \) (see text). \(\tau \) decreases, initially, with an increase of \({p}_{f}\); but then it increases with \({p}_{f}\) and eventually saturates. For fixed \({p}_{f}\), the larger the value of R the smaller is the value \(\tau \).