Normal Term Villi (40X)
Normal Term Villi (40X)

The black arrows point to the vasculosyncytial membranes of these mature villi.
These points represent the thinnest separation between the fetal and maternal circulations.
The intervillus space (IVS) contains the maternal blood.
The villus interior is predominantly composed of vascular profiles at term.
(Description By:Linda Ernst )
(Image Contrib. by:Linda Ernst UCHC )