http://www.worldpharmanews.com/research/2041-ucla-engineered-stem-cells-seek-out-and-kill-hiv-in-living-organisms

Read the article above and answer the following questions:

How does HIV/AID affect the human immune system?
What makes this recent research unique?
What is the potential weakness in this research?
What was the test subject? And why was this choice made?
What is the next step for the future research in the area of HIV/AIDS?
What may this research mean for HIV/AIDS patients?