Topical Terminology > O'brien, Stephen J.
1 Definition
O'brien, Stephen J.
For O'brien, Stephen J. we have a term and definition in Evolution.
O'brien, Stephen J. (Evolution) 
A geneticist at the National Cancer Institute whose research interests include the evolutionary history of the immunological response in mammals to retroviruses like HIV. With his colleagues, he discovered a mutation that can protect individuals from infection by HIV, the virus that causes AIDS.
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