Title: Spiral artery in endometrium (human, midpregnancy)
Description: Stain: Hematoxylin-eosin.
(A): Emerging into partly damaged intervillous space (1), filled with hemorrhage and fibrin (2). (3) uterine vein and (4) smooth muscle cell bundles at the endometrial-myometrial junction.
(B): Lumen with hypertrophic endothelium at higher magnification (5). Note as an unusual phenomenon nuclear inclusions of several endothelial cells most likely due to viral infection. (2) branches of uterine veins.
Keywords/Mesh: placenta, trophoblast, spiral artery, endometrium, blood vessels, histology, POJA collection.