Image Number K11745-1
Plant pathologists Paul Tooley and Nina Shishkoff examine rhododendrons for symptoms of infection with the sudden oak death pathogen, Phytophthora ramorum
. The plants were inoculated with 5,000 spores and incubated at 100-percent relative humidity to allow infection and symptom development.
Photo by Peggy Greb.
640 pixels wide: (k11745-1.jpg)
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