http://www.msnbc.msn.com/id/40666443/ns/health-aids/

The results, published this week in the journal Blood, show that the donor's bone marrow cells were able to rebuild the patient's supply of CD4 cells to match that of a healthy person. None of the patient’s original CD4 cells remained. Moreover, the virus was not detected in the body, and the patient showed no signs of infection, the researchers said.
http://www.sbwire.com/press-releases/sbwire-88779.htm

Actually, this condition of “functional cure” naturally occurs in 0.15% of HIV-infected patients. These individuals spontaneously control HIV replication at undetectable levels, do not experience immune depletion or disease progression. They exhibit low levels of HIV reservoirs and strong anti-HIV CD8 responses. Researchers would like to mimic this condition to the benefit of more patients.