Figure 3.

Possible patterns using our model and setting w_a > q_a and w_b ≈ q_b, without a bias in the protrusions directionality (a–d) and with polarized protrusions (e–h). The star pattern in (g) is obtained by allowing cells to exert protrusions perpendicular to radii focused in the tissue centre. The labyrinthine pattern in (h) is obtained by assuming that cells exert protrusions along a random but not necessarily fixed direction. The parameter values for each plot are given in table 1. Baseline parameters common across simulations are detailed in the Methods section. Colour scheme: white, D < 0.005; orange, 0.005 < D < 0.05; light brown, 0.05 < D < 0.5; dark brown, D > 0.5. The values of Delta (D) used for the colour scheme were normalized by dividing across by the maximum Delta value for any given expression matrix.