Scientists Discover HIV Antibodies.

In a significant step toward eradicating HIV/AIDS, U.S. scientists have discovered three powerful antibodies that have successfully killed 91 percent of HIV strains, more than any other antibody yet discovered. Scientists also said they had examined the strongest antibody and determined what makes it so successful in fighting the deadly virus. Doctors used a man called Donor 45, a 60-year-old African-American man whose body naturally made the antibodies, and screened 25 million of his cells to find the 12 that produced the antibodies. Scientists said it will take years of work to develop any kind of treatment, and there is one potential downfall: Donor 45's cells took months, and in some cases, years, to create the antibodies, meaning doctors will need repeated shots and boosters to speed up the processes.