Figure 6.

Contributions of the different reaction mechanisms at 60 sec for different concentrations of EGF with (a) a receptor number density of 5500 receptors per μm² and D = 2 × 10^-14 m²sec^-1, (b) a receptor number density of 125 receptors per μm² and D = 2 × 10^-14 m²sec^-1, and (c) a receptor number density of 125 receptors per μm² and D = 2 × 10^-15 m²sec^-1.