Joe has been HIV positive for the past 6 years. His disease has been slowly progressing. Mike, his only partner for the past 3 years, is free of the disease. A plausible explanation for Mike's lack of infection would be

Question

Quizplus · Accepted Answer

The absence of the obligate coreceptor CXCR4 for HIV prevents viral entry into CD41 cells. There is no evidence that NK cells, a high CD4/CD8 ratio, or anti GP-160 antibodies is protective.

Joe Has Been HIV Positive for the Past 6 Years