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Fig. 3 | Zoological Letters

Fig. 3

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

Fig. 3

Placental fibrinoid. a H&E staining of a fibrinoid at the junction of arcade and intervillous space. b Fibrinoid is vWF-positive (vWF staining; red), therefore fibrin-type. It also looks continuous with the perivillous fibrinoid of a villus marked by an asterisk. c Fibrinoid stained with Masson’s trichrome method. Note that collagenous i.e., matrix-type and non-collagenous fibrinoid i.e., fibrin-type is intermingled. Also note the leukocytes present in the fibrinoid. IVS = Intervillous space

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