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== Human embryo ==


Stage 9 day 20, somites 3-4


Cranial view (amniotic sac cut away) showing the embryo, cut amnion and yolk edge.


Stage9day20somites3-4caudodorsalsem6-800px.jpg
Note:
 
# the shape of the early folded embryonic disc and rostro-caudal bendings.
# the primitive pit and streak.
 
Original file name: Stage9day20somites3-4caudodorsalsem6-800px.jpg
 
{{Template:Carnegie_stages}}
 
{{Template:SEM}}

Revision as of 21:02, 22 August 2009

Human embryo

Stage 9 day 20, somites 3-4

Cranial view (amniotic sac cut away) showing the embryo, cut amnion and yolk edge.

Note:

  1. the shape of the early folded embryonic disc and rostro-caudal bendings.
  2. the primitive pit and streak.

Original file name: Stage9day20somites3-4caudodorsalsem6-800px.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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