Normal lung vs. scleroderma lung (IMAGE) Medical University of South Carolina Caption Immunofluorescence images showing healthy (left) and scleroderma (right) lung. The scleroderma lung shows reduced levels of Cathepsin L (green) and increased levels of fibroblast activation marker (red). Image courtesy of Joe Mouawad, Medical University of South Carolina. Credit Joe Mouawad, Medical University of South Carolina Usage Restrictions Use with appropriate title, caption and credit line. 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.