Fig. 2. Clonal analysis of olig2:EGFP^P/E neural plate cells. (A) Schematic representation of cell labeling strategy. The grid represents cells of the neural plate. Green boxes are olig2:EGFP⁺ cells, which, at the time of labeling, overlie the most medial neural plate cells as a consequence of cell movements during early neurulation. (B) Dorsal view of transgenic embryo immediately after labeling. (C-F) Side views, anterior to the left, dorsal up, of 2.5 dpf embryos showing examples of labeled cells, which include PMNs, KA' interneurons and VeLD interneurons. Filled and outlined arrowheads indicate different axon projections. P/E clone numbers correspond to clones in Table 1. Scale bar: 20 µm for B; 40 µm for C-F.