Word: nabel
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Dates: during 2010-2019
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Without an answer, developing vaccines is a very halting process. "The virus is a moving target," says Dr. Gary Nabel, director of the Vaccine Research Center at the National Institutes of Health (NIH). "It is constantly changing its genetic makeup through mutations. It's also a moving target because the proteins of the virus surface are actually moving themselves - they are conformationally flexible. The net result is that the immune system never gets a really good look at them...
...year to two years after the disclosure of those results had to be among the most bleak of times for AIDS-vaccine scientists," says Nabel. "We questioned just about everything we were doing...