Resistance Assessment Process (IMAGE) American Phytopathological Society Caption Locations and study trees were selected through a collaborative process to ensure that sampling would be conducted to span the range of tanoak utilization on the Hoopa and Yurok reservations. Cuttings from canopy branches were removed in the field and transported to the laboratory on ice where they were challenged with the Phytophthora ramorum pathogen, incubated for 2 weeks in a high-humidity environment, and assessed through high-contrast image analysis. Credit Richard C. Cobb, Noam Ross, Katherine J. Hayden, Catherine A. Eyre, Richard S. Dodd, Susan J. Frankel, Matteo Garbelotto, and David M. Rizzo 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.