Xenbase Image ID: 49538

(CURATORS NOTE:line drawings not shown due to poor reproduction quality- see original article for details) Fig. 3. Xnot2 and Xbra are expressed in distinct regions of the tailbud. Embryos were hybridized with Xnot 2 (A,B,C) or Xbra (ABC antisense RNA, developed with alkaline phosphatase, embedded in paraffin wax and sectioned. (A,A Stage 23, sagittal section; (B,B stage 28, sagittal section; (C, C stage 31, frontal section. (A,B,C) Schematic drawings indicating the anatomy of the region based on analysis of serial sections. Note that Xnot2 is expressed in the chordoneural hinge (anterior wall of the neurenteric canal) and ventral spinal cord. Xbra, in addition to the chordoneural hinge and notochord, is expressed in the posterior wall of the neurenteric canal and in cells of the roof of the spinal cord (arrowheads). Note that the neurenteric canal is visible in the frontal sections (C). Image published in: Gont LK et al. (1993) Copyright © 1993. Image reproduced with permission of the publisher and the copyright holder. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. Gene Synonyms Species Stage(s) Tissue not.L flh, floating head, not-a, not-b, not1, noto, Xnot, Xnot-2, Xnot1, Xnot2, Znot X. laevis Sometime during NF stage 23 to NF stage 31 chordoneural hinge posterior neural tube posterior notochord spinal cord floor plate tbxt.S bra, brachyury, ntl, t, t-a, t-b, X-bra, Xbra, Xbrachyury X. laevis Sometime during NF stage 23 to NF stage 31 tail bud notochord chordoneural hinge posterior spinal cord roof plate posterior wall of neurenteric canal Image source: Published Larger Image Printer Friendly View

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