Monte Carlo simulations used to reproduce experimental results. (a) Cell tracks used to extract the migration velocity both on the flat (FLAT) and the nanopattern (NANO). (b) Cell distribution within a sample with a square nanopatterned area in the centre (NANO) surrounded by a flat area (FLAT) after simulation the cell growth for 48 hours. (c) Density profile along the center line of the black frame; the red line correspond to the interface between the two areas. (d) Cell density both on the nano pattern and the flat over time. (e) Relative density reported over time. The error bars represent the standard error of the mean.