Canine melanoma (IMAGE) University of Tokyo Caption (Above) Normal canine mucosal cells. (Below) Canine mucosal melanoma with high and low levels of PDPN stained by red color. The red patches on the lower row show a more severe spread of the tumor. Credit ©2023 Kato et al. CC-BY Usage Restrictions Credit must be given to the creator. License CC BY 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.