Title: Tertiary villi (human placenta, full-term, cross-section)
Description: Stain: Hematoxylin – azophloxine.
A few tertiary villi (1) within the intervillous space (2) contains capillary (3) and embryonic connective tissue (*). It remains covered by the postmitotic multinucleated syncytiotrophoblast cell (STC, 4). Distinct nuclear accumulation in the STC indicates the so-called syncytiotroblast knots (4) eventually resulting in sprouts of syncytiotrophoblastic islands (5). Two cross-sections of these sprouts with numerous nuclei are present (4).
Keywords/Mesh: placenta , tertiary villi , syncytiotrophoblast, chorionic villi, trophoblast, histology, POJA collection.