Fig. 5. Appropriate EC density is required for capillary network formation. Types of capillary-like networks formed by plating different numbers of cells (n̄ = 50, 100, 200 and 400 cells/mm²) on Matrigel surface. (E–H) Results of numerical simulations of Model (1–3) using the same number of cells and physical values of relevant parameters as in (A–D). (I) Mean ± SD values (51 ≤ n ≤ 110) of chord lengths of network structures obtained with varying cell density (100–200 cells/mm²) in four different experiments (filled circle, open circle, filled triangle, open triangle). Points corresponding to different experiments but to the same cell density value have been separated horizontally for better readability.