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Fig. 4 | Zoological Letters

Fig. 4

From: The fetal-maternal interface of the nine-banded armadillo: endothelial cells of maternal sinus are partially replaced by trophoblast

Fig. 4

Collagen levels in the endometrial stroma increase during pregnancy. Masson’s trichrome staining. a Non-pregnant. b Early-gestation. c Early-gestation; higher magnification. Note the lack of cytoplasmic blue staining in some stromal cells. d Mid-gestation. GE = glandular epithelium, LE = luminal epithelium, str = endometrial stroma, MBS = maternal blood sinus, Tr = trophoblast

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