Fig. 2. Zebrafish Vax genes are expressed in the optic stalk and the preoptic area. Expression patterns of vax1 and vax2 genes (indicated bottom right) in the anterior neural keels (A,D) and brains (B,C,E-L) of wild-type embryos at various stages (indicated bottom left). Dorsal is to the top in the frontal views (A-F,I). Anterior is to the left in the dorsal views (G,J) and in the lateral views (H,K,L). Eyes are removed to observe the preoptic area in L. Arrowheads indicate optic recess (H,L). Abbreviations: cf, choroid fissure; e, eye; hyp, hypothalamus; mb, midbrain; nr, nasal retina; poa, preoptic area; or, optic recess; os, optic stalk; re, retina; t, telencephalon; tr, temporal retina.