The immunohistochemical localization of pregnancy-specific beta 1-glycoprotein in postimplantation rat trophoblast.
Pregnancy-specific beta 1-glycoprotein (SP1) was identified by peroxidase-antiperoxidase (PAP) immunohistochemistry in the placenta of inbred strains of rat between 10 and 21 days of gestation. SP1 was located predominantly in basal zone trophoblast and in intravascular trophoblast of decidual vessels, but it was absent from labyrinthine trophoblast. No perivascular cells were identified by SP1 staining, but occasional clusters of interstitial trophoblast stained for SP1. The results suggest that basal and labyrinthine trophoblast are functionally different.
D000818:Animals; D003433:Crosses, Genetic; D005260:Female; D007124:Immunoenzyme Techniques; D008297:Male; D010920:Placenta / Q000502:physiology; D011247:Pregnancy; D011257:Pregnancy Proteins / Q000032:analysis*; D011268:Pregnancy-Specific beta 1-Glycoproteins / Q000032:analysis*; D051381:Rats; D011919:Rats, Inbred Strains; D014327:Trophoblasts / Q000166:cytology*
D011257:Pregnancy Proteins; D011268:Pregnancy-Specific beta 1-Glycoproteins