How Do Neural Cells Respond to Ischemia? (IMAGE) Lomonosov Moscow State University Caption Developing rat brain cells (red) are surrounded by oxygen-sensitive phosphorescent nanoparticles (blue and green). Gradation between blue and green report of oxygen concentration in the culture of brain cells in real time. Credit Image courtesy: the Laboratory of D. Papkovsky. 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.