Immunostaining for pan-cytokeratin illustrates re-epithelialisation of the endometrium consistent with cell migration.

<p>Pan-cytokeratin, used as a marker for epithelial cells, was observed in the luminal epithelium and the glandular epithelium. A; The shed decidualised cell mass was observed to be detaching from the underlying stromal cell compartment at 24 hours after progesterone withdrawal. B; The denuded, underlying stroma, as indicated by the arrowheads, next to a region of luminal epithelial cells. C; The luminal epithelium next to an area of denuded basal stroma (arrowheads). D; Round epithelial cells appear to be “rolling” along an area of the denuded basal stroma. LE; luminal epithelium, G: glandular epithelium, SC; shed cells. Scale bars are equal to 200 µm, 100 µm or 20 µm where indicated.