Oligodendrocytes (IMAGE) Karolinska Institutet Caption This is a photo of oligodendrocytes in a tissue sample from the human brain. It is an illustration for a paper in Cell by Dr. Jonas Frisén and colleagues at Karolinska Institutet, Sweden. Credit Jonas Frisén, Karolinska Institutet. Usage Restrictions May only be used as press image free of charge in connection to media reports about the research of Jonas Frisén at Karolinska Institutet, Sweden. 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.