The Nef protein helps HIV evade the adaptive immune system by____
a. destroying cytotoxic T cells
b. destroying class I MHC proteins present on the surface of infected cells
c. destroying class I MHC proteins in the cytoplasm
d. binding to class I MHC proteins at the cell surface, thereby blocking their availability to cytotoxic T cells
e. binding to class I MHC proteins and preventing their transport to the cell surface
ANSWER: e
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