To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 6 Z-stack video of DKO mutant mice, heart 2. Z-stacks videos of the intercellular space between two additional sets of DHet and DKO Purkinje cell pairs Neural cell adhesion molecule is required for ventricular conduction system development Camila Delgado, Lei Bu, Jie Zhang, Fang-Yu Liu, Joseph Sall, Feng-Xia Liang, Andrew J. Furley, and Glenn I. Fishman Development 2021. 148:None-None; doi: 10.1242/dev.199431 Download Original Video