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Abstract

The ultrastructure of the chorioallantoic placenta of the lesser bush baby (Galago senegalensis) has been studied. The placenta was shown to be of the diffuse, epitheliochorial and adeciduate type. The trophoblasts of the chorionic villi, other than those lining the chorionic vesicles, were characterized by the presence of many lipid droplets. In the later stage of gestation, the fetal capillaries indented the trophoblastic epithelium reducing the distance between fetal and maternal circulations. In addition chorionic vesicles were observed. The trophoblasts lining the chorionic vesicles have outward bulging apical surfaces. There are clefts between these cells and this region is occupied by microvilli of adjacent cells. Several layers of fusiform cells that did not extend up into the cores of the chorionic vesicle villi formed the outer component of the vesicular wall. Granulated cells were observed within the maternal connective tissue and their possible role is discussed. (c) 2005 Elsevier Ltd. All rights reserved.

Keywords

chorionic vesicles; chorioallantoic placenta; granulated metrial cells

Published in

Placenta
2006, volume: 27, number: 45815, pages: 771-779

SLU Authors

UKÄ Subject classification

Animal and Dairy Science
Veterinary Science

Publication identifier

  • DOI: https://doi.org/10.1016/j.placenta.2005.07.003

Permanent link to this page (URI)

https://res.slu.se/id/publ/10905