Delay and failure to complete DC shown in a time-lapse movie of a spoZ339 mutant embryo expressing DE-cadherin-GFP. The body movement indicates completion of somatic musculature innervation, a process that normally occurs following the completion of DC. Each frame is a Z-stack projection. Elapsed time (h:min:s) is shown in the top right. Scale bar represents 20μm. Selected frames from this movie are shown in Fig. 1E,F.