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Fig. 2 The posterior prechordal plate of slb embryos is shortened and broadened, whereas the polster appears narrower and more elongated at bud stage. (A, B) Double labeling showing cells of the posterior prechordal plate expressing rtk2 (blue, in situ staining) and polster cells stained for Fkd2 (brown, antibody staining) in a wild-type (A) and slb (B) embryo at bud stage. Arrowheads demarcate the length of the posterior prechordal plate along the anterior-posterior axis. Dorsal views, anterior to the left.
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Reprinted from Developmental Biology, 184(1), Heisenberg, C.P. and Nüsslein-Volhard, C., The function of silberblick in the positioning of the eye anlage in the zebrafish embryo, 85-94, Copyright (1997) with permission from Elsevier. Full text @ Dev. Biol.