Table 1. Studies to Assess HIV-1 Reservoirs after Allogeneic Stem Cell Transplantation and Before Antiretroviral Treatment Interruption.

Sample Type	Quantity	Total Cells Tested	No. of Positive Replicates/ No. of Wells
Patient A (4.3 years post-HSCT)
Total HIV-1 PBMC DNA	<0.12 copies/106 cells	26×106 PBMCs	0/42
Infectious Virus by Co-Culture	<0.007 IUPMa	150×106 CD4+ T Cells	0/30
Patient B (2.6 years post-HSCT)
Total HIV-1 PBMC DNA	<0.13 copies/106 cells	24×106 PBMCs	0/42
Infectious Virus by Co-Culture	<0.006 IUPMa	160×106 CD4+ T Cells	0/32
Rectal Tissue	<2.4 copies/106 cells	1.23×106 nucleated cellsb	0/22

Abbreviations: HIV, human immunodeficiency virus; HSCT, hematopoietic stem cell transplantation; PBMC, peripheral blood mononuclear cell; IUPM, infectious units per million cells

^aNo replication-competent HIV-1 was recovered

^b25% CD4 + T cells determined by flow cytometry after tissue disaggregation and cell separation by density centrifugation