Fig. 7. Ablation of neural crest causes a reduction in pigment and loss of the dorsal fin. (A) Control stage 26 embryo. (B) Stage 26 embryo after neural crest ablation from hindbrain at stage 21. Pigment cells and dorsal fin are missing from the region dorsal to the site of ablation. Fewer pigment cells are seen ventrally when compared with the control (A). Pigment cells in the operated embryo are smaller and without the stellate morphology seen in pigment cells of the control embryo. arrow, area of reduced pigmentation; *, region missing dorsal fin. Scale bar: 250 µm.

Return to article