Fact 1: HIV infects and destroys helper T cells.

Fact 2: Helper T Cells Helper T cells are the brains behind immune response.

Given the two facts above, answer the question "What infects and destroys the brains behind immune response?" with the following options: 
- feet
 - p53
 - cancer
 - HIV
 - acid
 - fungus
 - HPV
 - host


 

    HIV     