In the continuing search for the Achilles heel of HIV, researchers may finally be enjoying some success.
This week, government researchers at the Vaccine Research Center of the National Institute of Allergy and Infectious Diseases (NIAID) reported the discovery of two naturally occurring antibodies that may block HIV. Describing their work in two separate papers in the journal Science, AIDS experts said that in lab experiments, the antibodies had successfully prevented more than 90% of circulating HIV strains from infecting human cells.



