Emerging Platelets (IMAGE) University of Würzburg Caption Emerging platelets (white arrows) are budded off by their progenitor cells, the megakaryocytes. Here the cytoskeletal components tubulin (green) and actin (red) and the nucleus (blue) are colored. Credit Foto: Rudolf Virchow Center of the Julius-Maximilians-Universitaet Wuerzburg (JMU) Usage Restrictions image only be used with stating the credit License Licensed content 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.