Scientists at Gladstone Institutes (IMAGE) Gladstone Institutes Caption A team of scientists—including Agnieszka Ciesielska (left), Barbara Klein (center), and Jeanne Paz (right)—showed that modified stem cells can improve brain activity, even when administered more than a month after a stroke. Credit Photo: Michael Short/Gladstone Institutes Usage Restrictions Use for non-commercial purposes only, in relation to this study License Original 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.