Researchers at OHSU's Vaccine and Gene Therapy Institute have been working to develop a vaccine against HIV. Dr. Louis Picker leads the team that has just announced success in tests on macaque monkeys. Dr. Picker says his vaccine is different from most. The vaccine Dr. Picker and his team have developed is like "armed soldiers" that establish in the body for years and wait for the virus so they can combat it. He adds they're still refining the vaccine and are probably still a few years away from clinical trials.