CT Scans of Mouse Rib Cages (image) University of North Carolina Health Care Caption CT scan of normal rib cage (left) and rib cage (right) of mutated animal lacking beta catenin in stromal cells. Arrowheads point to fractures. Credit Deb Lab, UNC School of Medicine. Usage Restrictions None 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.