Umbilical Vasculitis - acute 10x
Umbilical Vasculitis - acute 10x

Medium power view of an umbilical vessel.
Note the acute inflammatory cells (black arrows) which are leaving the fetal blood and migrating into the muscularis
The chemotactic stimulus is in the amniotic fluid which surrounds the fetus and umbilical cord.
(Description By:Linda Ernst )
(Image Contrib. by:Linda Ernst UCHC )