-Referring to the figure above, the progression from Phase II HIV infection to Phase III is marked by
A) a high fever and swollen lymph nodes
B) drop in the helper T cell count to less than 200/mm³
C) complete absence of antibodies to HIV
D) decreasing number of HIV in the blood
E) helper T cell numbers recovering from an initial drop

Question

-Referring to the figure above, the progression from Phase II HIV infection to Phase III is marked by
A) a high fever and swollen lymph nodes 
B) drop in the helper T cell count to less than 200/mm³ 
C) complete absence of antibodies to HIV 
D) decreasing number of HIV in the blood 
E) helper T cell numbers recovering from an initial drop

Quizplus · Accepted Answer

Phase III of HIV infection, also known as AIDS, is characterized by a significant drop in the helper T cell count to less than 200 cells per cubic millimeter of blood.

-Referring to the Figure Above, the Progression from Phase II