Photo of an Infected Ox (IMAGE) Hokkaido University Caption This is one of the cattle with Johne's disease showing significant weight loss. Credit National Agriculture and Food Research Organization Usage Restrictions This image is copyrighted and can be used for reporting this press release if properly credited. 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.