A Closer Look at Muscle (IMAGE) Duke University Caption The top row of photos show a microscopic view of healthy muscle fibers stained to reveal a variety of irregularities, while the bottom row shows the same but for muscle fibers afflicted by the disease LGMD2B. Notice any differences? Neither did the experts, revealing that the effects of the disease are not caused by physical malformations within the muscles. Credit Alastair Khodabukus, Duke University 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.