Fig. 2. Expression profile of daw. (A-N) Embryos, larval imaginal discs and brains were hybridized with daw probe. (A) Stage-5 embryos showing uniform maternal transcript. Sites of zygotic expression include: mesoderm at stage 7 (B) and stage 11 (C); visceral and somatic mesoderm (D) and oenocyte (magnified view E) at stage 13; VNC (optical sections F,G), fat body (arrowhead in G), posterior spiracles, hindgut and the maxillary segment (H), median, intermediate and lateral clusters of glial cells in the VNC (magnified views I,I'), at stage 17. (J) VNC of gcm^- embryos. Larval expression is in the optic lobe and central brain (K), wing (L) and leg (M) imaginal discs, and bodywall muscles (N). A-C are lateral views; D,E,H are dorsal views; F,G,I,I',J are ventral views; A-J, anterior is to left.