Fig. 2 Expression of vox and vent during development. (A, B) 30% epiboly, animal pole view. (C, D) Shield stage, animal pole view. Arrowheads mark the dorsal border of vox (C) and vent (D) expression. (E, F) Shield stage, dorsal view. (G, H) Bud stage, posterior view. (I, J) 22-somite embryos, lateral view. (K) 70% epiboly, dorsal view, anterior is at the top. Note the clearing of vox from the axial region (asterisk). (L) 5- to 7-somite stage, dorsal view of embryo dissected away from the yolk, anterior to the top. Arrows mark expression in the neural crest. (M) 12-somite embryo, side view, anterior to the top. Arrowhead marks expression in the eye.
Reprinted from Developmental Biology, 224(2), Melby, A.E., Beach, C., Mullins, M., and Kimelman, D., Patterning the early zebrafish by the opposing actions of bozozok and vox/vent, 275-285, Copyright (2000) with permission from Elsevier. Full text @ Dev. Biol.