Xenbase Image ID: 135347

Figure B. Xtwi Is Expressed in the Mesoderm and Neural Crest of Late ·Neurulae transcripts (Figure 48). Apart from the neural crest, the only tissues labeled by Xtwi at these early stages are of mesodermal origin. It might be thought that a low level of (A) and (B) are sections a quarter of the way, (C) and (D) a third of the way, and (E) and (F) about halfway through stege 18-19 embryos counting from the anterior end, hybridized with Xtwi and cardiac actin probes. Note the strong expression of Xtwi in the an1erior neural crest (nc). Mesodermal labeling by Xtwi is restricted to the notochord (n) and anterior lateral plate mesoderm (lp), whereas cardiac actin labels only the somites (s). Image published in: Hopwood ND et al. (1989) Copyright © 1989. Image reproduced with permission of the Publisher, Elsevier B. V. Gene Synonyms Species Stage(s) Tissue twist1.S twist, twist1-a, twist1-b, X-twi, Xtwi, Xtwist X. laevis Sometime during NF stage 18 to NF stage 19 neural crest cranial neural crest notochord lateral plate mesoderm actc1.L actc, actna1, cardiac actin, cardiac alpha actin, muscle actin X. laevis Sometime during NF stage 18 to NF stage 19 somite Image source: Published Larger Image Printer Friendly View

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