Some people cannot be infected with HIV because
A)they are already infected.
B)their cells lack receptors that admit the virus.
C)their cells have extra receptors for HIV.
D)they were vaccinated.

Question

Some people cannot be infected with HIV because
A)they are already infected.
B)their cells lack receptors that admit the virus.
C)their cells have extra receptors for HIV.
D)they were vaccinated.

Quizplus · Accepted Answer

Some people have a genetic mutation that causes their cells to lack or have very few CD4 receptors, which are used by the HIV virus to enter and infect cells. Without these receptors, HIV is unable to infect their cells and replicate.

Some People Cannot Be Infected with HIV Because