HANK MORGAN / SCIENCE PHOTO LIBRARY HANK MORGAN / SCIENCE PHOTO LIBRARY
Doctor injecting VaxSyn, an experimental form of AIDS vaccine, into an HIV-positive patient's arm during the vaccine's clinical trials. VaxSyn is an engineered, recombinant form of the HIV protein gp160, the precursor to the outer surface protein of the virus. VaxSyn contains no attenuated infectious parts of HIV & therefore carries no risk of transmitting AIDS. The vaccine is being developed by MicroGeneSys and is undergoing trials as a treatment of HIV-positive patients & as a potential vaccine against HIV infection.
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