Fig. 5. Early migrating neural crest cells, but not later migrating cells, can reorient and reverse their initial direction of movement. (A-C) Single neural crest cells tracked in teal and red, were able to reverse their original direction through the rostral sclerotome and populate a different structure than that they were originally headed toward. (D) Summary of their pathways are shown using vector diagrams. (E-H) Cells tracked in yellow and pink try to reverse their direction but are forced back in their original direction. (F) Vector diagrams show seven individually tracked cells that were unable to reverse their migration direction. Scale bar: 30 µm. D, dorsal; drg, dorsal root ganglia; sg, sympathetic ganglia; V, ventral.