Placental Stem Cells (image) Society for Experimental Biology and Medicine Share Print E-Mail Caption This is a microphotograph of chorionic villus of human term placenta immunostained for CD34 (Marker of endothelial and hematopietic stem cells, red), CD31 (marker of endothelial cell, green) and nuclei (DAPI, blue). Non-endothelial CD34-positive cell is clearly observed in tissue of placenta. Credit Society for Experimental Biology and Medicine Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.