Template:Windle1940 table1

Table 1 Tissues and Substances Separating Fetal from Maternal Blood in Five Types of Placentas

Type of placenta	Epithelio-chorial	Syndesmo-chorial	Endothelio-chorial	Hemo-chorial	Hemo-endothelial
Maternal tissue:
Endothelium	+	+	+	-	-
Connective	+	+	-	-	-
Epithelium	+	-	-	-	-
Uterine milk or pablum						+	+	-	-	-
Fetal tissue:
Chorion	+	+	+	+	-
Mesenchyme	+	+	+	-	-
Endothelium	+	+	+	+	+
Examples	Horse, swine	Cattle, sheep	cat, dog	Man, monkey	rabbit, guinea pig, rat