Image Number K11745-1
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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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