Nanoparticle Images (IMAGE) Kansas State University Caption Image B is a mouse that has been given 500,000 neural stem cells carrying 40 micrograms of dopamine-stealth coated iron/magnetite nanoparticles through the lateral tail vein 30 hours before the MRI measurement. Accumulation of the nanoparticles in lung melanomas causes a sharp T1-constrast, which is labeled with the three arrows. Image C shows the accumulation of the iron/magnetite nanoparticles in the liver. Credit Stefan Bossmann 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.