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Stage 9 day 20, somites 3-4
Stage 9 day 20, somites 3-4


Scanning EM selected region showing notochordal plate from the [[:File:Stage9 sem2.jpg|ventrolateral view ]] (cut away from amniotic sac and yolk sac) showing the embryo and connecting stalk.
Scanning EM selected region showing notochordal plate running rostro-caudal (right to left) from the [[:File:Stage9 sem2.jpg|ventrolateral view ]] (cut away from amniotic sac and yolk sac) showing the embryo and connecting stalk.


[[:File:Stage9 sem2.jpg|ventrolateral view ]] is a more ventral and rostral view of [[:File:Stage9 sem1.jpg|Stage9 sem1]] image.
[[:File:Stage9 sem2.jpg|ventrolateral view ]] is a more ventral and rostral view of [[:File:Stage9 sem1.jpg|Stage9 sem1]] image.

Latest revision as of 16:00, 22 August 2009

Human embryo

Stage 9 day 20, somites 3-4

Scanning EM selected region showing notochordal plate running rostro-caudal (right to left) from the ventrolateral view (cut away from amniotic sac and yolk sac) showing the embryo and connecting stalk.

ventrolateral view is a more ventral and rostral view of Stage9 sem1 image.

Note:

  1. the notochordal plate on ventral surface of embryo.
  2. the large cilia present on the notochordal plate region.
  3. the numerous small villi present on the entire epithelial cell layer.
  4. large pale "blob" in centre of image is an artifact.

Original file name: Stage9day20somites3-4lateralsem3v2.jpg

Carnegie Stages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | About Stages | Timeline

Image Source: Scanning electron micrographs of the Carnegie stages of the early human embryos are reproduced with the permission of Prof Kathy Sulik, from embryos collected by Dr. Vekemans and Tania Attié-Bitach. Images are for educational purposes only and cannot be reproduced electronically or in writing without permission.

Embryonic Development

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current15:57, 22 August 2009Thumbnail for version as of 15:57, 22 August 2009783 × 1,000 (98 KB)S8600021 (talk | contribs)== Human embryo == Stage 9 day 20, somites 3-4 Scanning EM selected region showing notochordal plate from the ventrolateral view (cut away from amniotic sac and yolk sac) showing the embryo and connecting stalk. [[:File:Stage