DR YORGOS NIKAS / SCIENCE PHOTO LIBRARY DR YORGOS NIKAS / SCIENCE PHOTO LIBRARY
Placental villi. Coloured scanning electron micrograph (SEM) of the villi (blue) of a placenta at full term. The villi, projections of foetal tissue into the maternal part of the placenta, together form a villous tree. Deoxygenated blood from the foetus flows through the villi and picks up oxygen and nutrients from the nearby maternal blood. Magnification: x230 at 5x7cm size.
Model release not required. Property release not required.