In Hawaii , a cooperative project with Cornell University has developed transgenic papayas resistant to the ring - spot virus . As a result of this research , the papaya industry was recently rescued by introduction of a genetic ``vaccine ' that immunized papaya trees against the ring - spot virus , which was destroying the entire crop (Gonsalves , 1998 ) This research is making possible the reintroduction of papaya cultivation to small farms in areas where the crop had previously been decimated by this disease . Similar research...











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