Fig. 5.

Comparison of tip migration and subsequent vessel production of a single realisation of the stochastic model (5) or (6) in Case 1 and 2, respectively (filled dots and triangles), the average of 64 realisations (dashed and dotted lines), and the PDE (23) or (27) (Solid and dashed-dotted line). Initial and boundary conditions as in (41), (40) for initially N⁰ = 2 tip cells in the leftmost box. In each case the spatial distribution of tips or vessels, respectively, is shown at two times.