File:Development of the notochord in CS9 to CS12 (19–30 days).tiff

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Fig 3. Development of the notochord in CS9 to CS12 (19–30 days). Human embryo.

3D reconstructions of specimens Nos. 3709, 6330, 6344, and 8943. Black lines indicate the level of the transversal histological sections (neural ectoderm is superior in each section). A CS9 (19-21d.) embryo with notochordal plate tightly attached to the neural tube on both lateral sides, forming a flat or U-shaped notochordal plate around the developing neural tube. Caudally a notochordal process with a neurenteric canal, indicated with a black arrow. B CS10 (21-23d.) embryo, the notochordal ridges are now pointing ventral, giving the notochordal plate the inverted U-shape. C Left an early CS11 (23-26d.) embryo (sections of the reconstruction) with a definitive notochord in the middle of the embryo and notochordal plate on both cranial and caudal extremes. The late CS11 embryo (right) specimen No. 6344 has a definitive notochord at the caudal extreme and in the middle. D In CS12 (26-30d.) all sections show a definite notochord. The caudal part of the notochord has a larger diameter. Note the space between notochord and endoderm (black arrows) and between notochord and neural tube (dotted arrows). Endoderm: transparent green, gastrulation: purple, neural ectoderm: green, notochordal plate: yellow, Notochordal process: cyan blue.
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Source https://doi.org/10.1371/journal.pone.0205752.g003 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0205752 (2018) The development of the human notochord. PLoS ONE 13(10): e0205752.
Author de Bree K, de Bakker BS, Oostra R-J
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Copyright: © 2018 de Bree et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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current05:22, 9 May 2024Thumbnail for version as of 05:22, 9 May 20241,300 × 1,308 (1.82 MB)Rasbak (talk | contribs){{Information |description=Fig 3. Development of the notochord in CS9 to CS12 (19–30 days).<br> 3D reconstructions of specimens Nos. 3709, 6330, 6344, and 8943. Black lines indicate the level of the transversal histological sections (neural ectoderm is superior in each section). A CS9 (19-21d.) embryo with notochordal plate tightly attached to the neural tube on both lateral sides, forming a flat or U-shaped notochordal plate around the developing neural tube. Caudally a notochordal process w...

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