This results in the formation of villous tree structures. It has long, creeping rhizomes or shallow rhizomes with swollen, villous nodes. The architecture may be tubular, villous, or tubulo-villous. Another symptom might be increased mucous production especially those involving villous adenomas. It is a tall, perennial herb with villous stems. Choriocarcinoma are trophoblastic tumors that form in the uterus from villous cells. PGF is also expressed in many other tissues, including the villous trophoblast. The amount of villous atrophy does not explain the severity of the diarrhea. The stamen filaments are densely villous from the base to the middle. The subspecies has a contracted panicle about long, with villous spikelets. Under microscopy, the duodenum has a villous mucosa. Unlike milk spots and chagasic rosary, inflammatory cells and vasculature are present in villous plaque. However, sometimes the placenta involutes, and multiple infarcts and villous degeneration cause placental insufficiency syndrome. Indeed, earlier studies of rotavirus damage in the gut showed this causes a villous atrophy. On the maternal side, these villous tree structures are grouped into lobules called cotyledons.