Medulloblastoma brain tumor (IMAGE) Johns Hopkins Medicine Caption On the left is a magnetic resonance image of a child’s medulloblastoma brain tumor, and on the right, a photomicrograph of medulloblastoma cells. The circle shows a Homer Wright rosette, a circular cluster of tumor cells characteristic of the disease. Johns Hopkins Medicine researchers have combined two old therapies — copper and disulfiram — to destroy this pediatric cancer. Credit Graphic created by M.E. Newman, Johns Hopkins Medicine, using public domain images. MRI scan courtesy of the National Cancer Institute and photomicrograph courtesy of Jensflorian via Wikimedia Commons Usage Restrictions None 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.