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(Scroll down to see both images.)
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Field trial of RO plants of line 55-1; trial established in April 1992. (Top). Picture taken in December 1992. Border trees are nontransgenic papaya mechanically inoculated with PRSV. Trees within the border are mixture of transgenic and nontransgenic papaya. Trees with yellow canopy are nontransgenic infected with PRSV while those with the green canopy are trees of transgenic line 55-1. (Bottom). Picture taken in June 1993. Note that all of nontransgenic plants are severely infected with PRSV while plants of transgenic line 55-1 remained uninfected and still have green canopies.
Photograph courtesy Dennis Gonsalves
Department of Plant Pathology, Cornell University
