MRI of Healthy Cells Vs. Cancer Cells (IMAGE) Johns Hopkins Medicine Caption Normal cells (left) have far more sugar attached to mucin proteins than do cancerous cells (right). Mucin-attached sugar generates a high MRI signal, shown in red. Credit Xiaolei Song/Johns Hopkins Medicine Usage Restrictions Please credit the photo 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.