The Food and Drug Administration has approved the first human testing of a vaccine made with pure DNA, in an attempt to find a way to protect against AIDS. Apollon Inc. and the National Institutes of Health will test the experimental AIDS vaccine on15 healthy people at the NIH hospital in Bethesda, MD. Potential AIDS vaccines have been given to healthy people before. But this one marks the first time a healthy person has received the pure genetic material of any disease. In other FDA news, the regulatory agency approved a new nasal spray to help smokers quit. The spray hits the bloodstream faster than the nicotine gum or the nicotine patch.