C. novyi (2 of 2) (image) Johns Hopkins Medicine Caption This is a hematoxylin and eosin stain of a C. novyi-NT treated dog tumor. Lighter pink areas areas denote tumor necrosis next to areas with viable tumor cells. Black patches are calcified areas of tissue. Credit Credit: David L. Huso and Baktiar Karim of the Johns Hopkins Department of Pathology. 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.