Soychemist writes: Some people have a mutation that makes them highly resistant to HIV, and scientists think that they can give that immunity to anyone with a new type of gene therapy. The first human trials will start at the University of Pennsylvania this week. Researchers will draw blood from people with drug-resistant HIV, clip the CCR5 gene out of their T-cells with a nuclease enzyme, grow the modified cells in a dish, and then return a billion of them to the patient's bloodstream. Those cells will be immune to the virus, and they will keep the patient's T-cell count up even if the rest are destroyed.
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