Figure 4

Healing times of damaged endothelium. (a) Starting with identical hole density profiles (shown in Fig. 3) on their endothelia, the time it takes (healing time) for the hole to be reduced to a fraction θ is shown for a young (T = 20 years), a middle-aged (T = 40), and an old (T = 60) person. Parameter values as in Table 1, and γ = 10^-8. (b) Starting with the cell generation profile of an old person (T = 60 years) with a damaged endothelium (hole density profile in Fig. 3), the healing times are determined for the three γ values indicated. Other parameter values in Table 1.