ORBi: Morgan G. - An immunological cryo-ultrastructural study of a sequential appearance of proteins in placental binucleate cells in early pregnancy in the cow

Reference : An immunological cryo-ultrastructural study of a sequential appearance of proteins in pl...


	Document type :	Scientific journals : Article
	Discipline(s) :	Life sciences : Veterinary medicine & animal health
	To cite this reference:	http://hdl.handle.net/2268/4551

Title :	An immunological cryo-ultrastructural study of a sequential appearance of proteins in placental binucleate cells in early pregnancy in the cow
Language :	English
Author, co-author :	Morgan, G. [AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge CB2 4AT UK > > > >]
	Wooding, F. B. P. [AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge CB2 4AT UK > > > >]
	Beckers, Jean-François [Université de Liège - ULg > Département de sciences fonctionnelles > Physiologie de la reproduction >]
	Friesen, H. G. [University of Manitoba, Winnipeg, Manitoba, Canada R3EOW3 > Faculty of Medicine, Dept of Physiology > > >]
Publication date :	Jul-1989
Journal title :	Journal of Reproduction and Fertility
Publisher :	Portland Press
Volume :	86
Pages :	745-752
Audience :	International
ISSN :	0022-4251
City :	Colchester
Country :	United Kingdom
Keywords :	[en] Immunology ; Ultrastructure ; Proteins ; Early pregnancy ; Cow
Abstract :	[en] Using the most sensitive immunocytochemical method available, on ultrathin frozen sections, the results in this paper demonstrate that bovine placental lactogen (bPL) is present in the earliest fetal binucleate cells found at 21 days post coitum in the trophectoderm. A second protein, the SBU-3 antigen, which is absent in the early stages of pregnancy appears abruptly in the binucleate cell granules at 30 days post coitum coincident with the start of villus development. Subsequently, the granules contain both bPL and the SBU-3 antigen. This sequential production of unlike proteins indicates that the binucleate cell has different functions depending on the stage of pregnancy and has important roles to play both at implantation and in villus development.
Target :	Researchers ; Professionals ; Students
Permalink :	http://hdl.handle.net/2268/4551

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