The syncytiotrophoblast (STB) that forms the epithelial covering of the placental villous tree has a unique cell biology on account of its syncytial nature. The tissue is in a terminally-differentiated. postmitotic state. and expands through the recruitment by fusion of underlying progenitor cytotrophoblast cells. https://www.bekindtopets.com/huge-sale-UT-Solution-Gel-for-Cats-super-grab/