Movie 3.

(A–D) Spinning disc microscopy videos of macrophages that migrate towards a laserablated cell (indicated by the yellow circle). Cells are imaged for 30 minutes after ablation in a 30 seconds interval and tracked afterwards using Imaris. (A) WT wild type (B) ck1α^L141M mutant, (C) wave^Δ37 and (D) βPS-integrin (mys¹) mutant macrophages. Homozygous mutant cells are labeled by GFP expression using the MARCM system. Scale bars represent 10 μm.