Question

6. Which of the following conditions is NOT expected to provide protection against HIV-1 infection of helper T cells?

A. A loss-of-function mutation in the CCR5 gene

B. Treatment with enfuvirtide, a membrane-fusion inhibitor

C. Treatment with concanamycin A, an inhibitor of endosomal proton pumps

D. Treatment with AMD-070, a CXCR4 antagonist

E. Treatment with PRO-542, a soluble decoy protein containing CD4 sequences