To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 5 3D movie of the migrating stream of Robo3-immuoreactive pontine neurons in a wild type E16 embryo. Abbreviations: Hind, hindbrain; Mes, mesencephalon; Fr; Fasciculus retroflexus; Commissural neurons transgress the CNS/PNS boundary in absence of ventricular zone-derived netrin 1 Juan Antonio Moreno-Bravo, Sergi Roig Puiggros, Heike Blockus, Chloé Dominici, Pavol Zelina, Patrick Mehlen, and Alain Chédotal Development 2018. 145:None-None; doi: 10.1242/dev.159400 Download Original Video