File:Placenta humans and guinea-pig cartoon.jpg

From Embryology

Original file(1,200 × 889 pixels, file size: 562 KB, MIME type: image/jpeg)

Placenta and Fetoplacental Junctional Zone of Humans and Guinea-pigs

The main cellular and syncytial structures of both placentas are listed together with the reported expression of the vasodilator factors and enzymes. Factors are underlined when present in both species; isolated factors expressed only in one of the two species are lateralized to the presenting species. When the whole panel of factors is described in one of the species, this is depicted by a blue arrow pointing to the respective structures. Note that in the human an equivalent for periarterial trophoblast is not known.

  • fetal tissues - coloured blue and green
  • maternal tissues - red and brown
  • TB - trophoblasts
  • CTB - cytotrophoblasts
  • STB - syncytiotrophoblast

Links: Placenta Development | Guinea Pig Development


<pubmed>19646248</pubmed>| PMC2739214 | Reprod Biol Endocrinol.


© 2009 Valdes et al; licensee BioMed Central Ltd. 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 work is properly cited.

Valdes et al. Reproductive Biology and Endocrinology 2009 7:79 doi:10.1186/1477-7827-7-79

Fig. 8 1477-7827-7-79-8-l.jpg

File history

Click on a date/time to view the file as it appeared at that time.

current11:21, 12 May 2013Thumbnail for version as of 11:21, 12 May 20131,200 × 889 (562 KB)Z8600021 (talk | contribs)==placenta and fetoplacental junctional zone of humans and guinea-pigs== Schematic representation of the placenta and fetoplacental junctional zone of humans and guinea-pigs. In order to highlight comparable structures, all fetal tissues are colored b...

The following page uses this file: