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XB-IMG-84069

Xenbase Image ID: 84069

Fig. 2. Fate maps of cranial placodes at late gastrula or neural plate stages. The boundary of the (prospective) neural plate ( here defined as the precursor of the entire neural tube, which includes the inner but not the outer neural folds) is indicated by the broken line. All placodes originate from teh pre-placodal region in the non-neural ectoderm within and immediately adjacent to the outer neural folds. (A) Fate map of late gastrula zebrafish embryos with substantial overlap between ectodermal regions giving rise to different placodes (modified from Kozlowski et al., 1997). (B) Fate map of neural plate stage chick embryo (0–1 somite stage) with extensive overlap between various prospective placodes (based on data from Streit, 2002; Bhattacharyya et al., 2004). (C) Fate map of neural plate stage salamander (Ambystoma) embryo (based on Carpenter, 1937). Recently, otic and lateral line placodes in Ambystoma were reported to originate from the outer neural folds themselves and, thus, from slightly more medial positions than depicted here (Northcutt, 1996). HN: Hensen's node.

Image published in: Schlosser G (2006)

Copyright © 2006. Image reproduced on Xenbase with permission of the Publisher, Elsevier B. V.

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