Fig. 6. Flh regulates aspects of epiphysial development independent of Ash1a and Ngn1. Dorsal views of brain showing expression of otx5, tbxC and flh in wild-type (WT), flh, and single ash1a, ngn1 or double morphants. Probes used are indicated on the bottom right, stage on the bottom left and `genotype' at the top right of each panel. Ash1a and Ngn1 are implicated in the regulation of otx5 (B,D) but not of tbxC (G,I), whereas Flh is required for the expression of both genes (E,J). In addition, Flh is involved in the regulation of its own expression (N). Scale bar: 10 µm.