To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 3D illustration of a pHH3+ (green) neuroepithelial cell surrounded by three non-mitotic (blue) neuighour cells. Note that the pHH3+ cell has a small apical surface relative to its neighbours, which wrap over its widest part. Rho kinase-dependent apical constriction counteracts M-phase apical expansion to enable mouse neural tube closure Max B. Butler, Nina E. Short, Eirini Maniou, Paula Alexandre, Nicholas D. E. Greene, Andrew J. Copp, and Gabriel L. Galea J Cell Sci 2019. 132:None-None; doi: 10.1242/jcs.230300 Download Original Video