To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 15. Manual single cell tracking of a zoomed region from Movie 14 using the PK2-GFP signal. Neighbour exchanges are present during convergent extension but not during apical constriction. Time interval = 12.5 min. Distinct spatiotemporal contribution of morphogenetic events and mechanical tissue coupling during Xenopus neural tube closure Neophytos Christodoulou, and Paris A. Skourides Development 2022. 149:None-None; doi: 10.1242/dev.200358 Download Original Video