New Skin Cancer Model (IMAGE) University of Pennsylvania School of Medicine Caption This is Normal skin (Norm) with an adjacent squamous cell carcinoma (Tumor). Credit John T. Seykora, MD, PhD, University of Pennsylvania School of Medicine Usage Restrictions None 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.