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The AIDS Phase of HIV Infection Begins When the Concentration

Question 6

Multiple Choice

The AIDS phase of HIV infection begins when the concentration of CD4 T cells in the blood drops below what concentration?


A) 2,000 cells per cubic millimeter
B) 1,000 cells per cubic millimeter
C) 500 cells per cubic millimeter
D) 200 cells per cubic millimeter
E) No CD4 T cells are observed.

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