Researchers are studying the role of placenta-derived proteins and extracellular vesicles in pregnancy complications, including preeclampsia. The studies are exploring various aspects, such as the pathogenesis of preeclampsia, the potential of extracellular vesicles as markers and mediators, and possible mechanisms of disease. The findings may shed light on the complex interactions between the placenta and fetal development, and potentially inform the prevention and treatment of pregnancy complications.