Fig. 2. Rescue of ncl-1 with a brat transgene. Worms mutant for ncl-1, those carrying a brat transgene, and wild-type worms were visualized using Nomarski optics. The left image shows neurons anterior to the posterior bulb of the pharynx in a ncl-1(e1942) worm. The middle image shows neurons from the same region in a ncl-1(e1942) worm carrying an array containing KS+ncl5'&3'/brat. The right image shows the same region from a wild-type worm. In each panel, two nuclei are indicated with white arrows. Note that large nucleoli are visible in nuclei in the left image only. Scale bar: 5 µm.