HANK MORGAN / SCIENCE PHOTO LIBRARY HANK MORGAN / SCIENCE PHOTO LIBRARY
VaxSyn AIDS vaccine. Gloved hand holds a vial filled with the experimental AIDS vaccine VaxSyn. Here, this vaccine is being prepared in a laboratory. AIDS (Acquired Immune Deficiency Syndrome) is caused by HIV (Human Immuno- deficiency Virus). VaxSyn is a genetically- engineered recombinant form of the HIV protein gp160, a precursor to one of HIV's surface proteins. VaxSyn contains no infectious parts of the virus and therefore carries no risk of trans- mitting AIDS. The vaccine, developed by MicroGeneSys Inc., USA, is undergoing trials as a treatment of HIV-positive patients and as a potential vaccine against AIDS.
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