Stem Cells with Carbon Nanoparticles (IMAGE) Heinrich-Heine University Duesseldorf Caption Two CD34+ stem cells containing carbon nanoparticles (coloured magenta); the cell nuclei can be seen in blue. The researchers found that the nanoparticles are encapsulated in the cell lysosomes. Credit HHU / Stefan Fasbender Usage Restrictions None 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.