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Fig. 6 Development of the endocrine pancreas in zebrafish mutations affecting midline development and convergence movements. Expression of pdx-1 (A, C, E, G, I, K, M, O) and insulin (B, D, F, H, J, L, N, P) in wild-type and mutant embryos at 24 hpf. The following mutations are analyzed: (E, F) floating head; (G, H) one-eyed pinhead (oep); (M, N) spade tail (spt); and (O, P) knypek (kny). Lateral views in A, E, C, G, and dorsal views in all the other panels; anterior is to the left in all panels. All panels show the trunk of the embryo, between the posterior end of the hindbrain and about segment 10. The yolk has been removed from the embryos.
Reprinted from Developmental Biology, 230(2), Biemar, F., Argenton, F., Schmidtke, R., Epperlein, S., Peers, B., and Driever, W., Pancreas development in zebrafish: early dispersed appearance of endocrine hormone expressing cells and their convergence to form the definitive islet, 189-203, Copyright (2001) with permission from Elsevier. Full text @ Dev. Biol.