To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 3 Serial EM tomographic slices through defective TZ. Cross-sectional view of a double KO TZ with apparently defective TZ formation and no detectable cilium. Still images from this volume presented in Fig. S4. Scale bar: 200nm. J Cell Sci ; doi: 10.1242/jcs.240838 Download Original Video