Visualisation of a root pathogen attack (IMAGE) University of Cambridge Caption Visualisation of a root pathogen attack. A red fluorescently labelled Phytophthora pathogen infects seedling roots of barley. Image: Matthew Macleod. Credit Matthew Macleod Usage Restrictions None License Original 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.