English: This movie reports the trajectory of a cell that interacts partially (frames 80–180) with the cell reported in Movie S12. Also in this case there is some level of ambiguity in the assignment of the trajectory that must be settled by the user or the trajectory should be discarded from the analysis. The motion of the cell presents two adjacent loops (frames 70–90 and frames 150–200) and an inversion of the motion (frame 105). The color map of the image is an inverted gray colormap. The trajectory is reported in green levels with the same colormap as in Figs. 8, 9.