Movie 1.

Numerical simulation movies. Simulation of the WT case. The NT (green) is flanked with two PSMs (red). The title indicates the development time in hours. The numerical domain is of length 4500 μm and of width 300 μm. Axes are in meters (SI). The tissues are color coded by their densities, value on colorbar. For clarity of the movie and figures only the colorbar for the PSM is represented (the NT colorbar is a gradient from white (no density) to green (high density)).