File:Chicken endoderm origin.jpg: Difference between revisions

Revision as of 15:59, 20 May 2014

Chicken Definitive Endoderm Origin

A - Precursors of the primitive streak have been mapped to Koller's sickle (KS) at prestreak stages (green dots).

B - Precursors are within the primitive streak at stage 2 (red, PS).

C - The rostral third of the extending streak (pale red) gives rise to the definitive endoderm, which ingresses displacing the hypoblast laterally and eventually forming the whole lower layer of the embryo (arrows to D).

D - Gene expression is regionally restricted within the lower layer. The rostral germ cell crescent and displaced hypoblast (pale green hexagons) and junctional mesendoderm (pale green bars) are Gata4/5/6 positive. Rostral definitive endoderm is Sox17 positive (yellow), with more caudal definitive endoderm expressing only Gata6 transcripts by stage 4 (green in area pellucida). The area of overlap at the boundary between Sox17 and Gata6 is marked by asterisks (blue).

Links: Endoderm | Chicken Development

Reference

<pubmed>17663788</pubmed>| PMC2000891 | BMC Dev Biol.

Copyright

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

File history

Yi efo/eka'e gwa ebo wo le nyangagi wuncin ye kamina wunga tinya nan

	Gwalagizhi	Nyangagi	Dimensions	User	Comment
current	21:59, 3 August 2009		600 × 600 (53 KB)	S8600021 (talk \| contribs)	Schematic drawing of definitive endoderm origin. (A) Precursors of the primitive streak have been mapped to Koller's sickle (KS) at prestreak stages (green dots), and (B) are within the primitive streak at stage 2 (red, PS). (C) The rostral third of t

You cannot overwrite this file.

File usage

The following page uses this file:

Chicken Development

@@ Line 10: / Line 10: @@
 '''D''' - Gene expression is regionally restricted within the lower layer. The rostral germ cell crescent and displaced hypoblast (pale green hexagons) and junctional mesendoderm (pale green bars) are Gata4/5/6 positive. Rostral definitive endoderm is Sox17 positive (yellow), with more caudal definitive endoderm expressing only Gata6 transcripts by stage 4 (green in area pellucida). The area of overlap at the boundary between Sox17 and Gata6 is marked by asterisks (blue).
 |}
+:'''Links:''' [[Endoderm]] | [[Chicken Development]]
 ===Reference===