Fig. 2
rethu2846/+ larvae exhibit ENS progenitor migration deficits.
ENS progenitor migration at the front of migration (wavefront) visualized in real time by virtue of the SAGFF234A;UAS:GFP background labeling ENCCs. (A) Representative still images from confocal time-lapse recordings (depth-coded to resolve 2 migratory streams) of WT (ret+/+) and rethu2846/+ embryos at 0 minutes (48hpf) and 500 minutes (56hpf), show that distance travelled by the migration wavefront is decreased in rethu2846/+ larvae relative to WT larvae. Asterisk denotes a GFP+ cell from outside the ENS linage that remains in the same position. (B) The calculated wavefront migration speed (microns/minute) is significantly reduced in rethu2846/+ larvae relative to WT at 48–56hpf (p = 0.0022), and 72–80hpf (p = 0.0182).