vasculosyncytial membranes histology
B. The small terminal villi of a term placenta (hematoxylin-eosin, Ã10). C. Vasculosyncytial membrane (arrows) is the hallmark of a term villus, near fusion of the trophoblast basement membrane with the fetal capillary endothelium, with adjacent normal syncytial knots (hematoxylin-eosin, Ã40).