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7633 Pathology

A 19-year-old intravenous drug user has regularly sought human immunodeficiency virus (HIV) testing, always with negative results. He admits to carelessly sharing needles on multiple occasions with individuals later found to be HIV-positive. He has heard that there is an inherited genetic basis for some people to be relatively “immune” to HIV infection. The genetic change that he is referring to is a mutation in a gene coding for which of the following proteins?

ACCR5
BCD4
Cgp120
Dgp41
Pathology
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