Umbilical Vasculitis - acute 40x
Umbilical Vasculitis - acute 40x

High power view of an umbilical vessel at site where fetal neutrophils are migrating through the muscularis.
Note the fetal neutrophils lining up at the periphery of the vascular lumen and interspersed in the muscularis.
(Description By:Linda Ernst )
(Image Contrib. by:Linda Ernst UCHC )