Fig. 2From: An Antigenic Threshold for Maintaining Human Immunodeficiency Virus Type 1-specific Cytotoxic T LymphocytesImmunological and virological assessments in LNTPs. (A) Sequential cryopreserved peripheral blood mononuclear cell (PBMC) samples from five long-term nonprogressors (LNTPs) were stained with human immunodeficiency virus (HIV)-Gag (closed diamond) and HIV-Pol (closed square) tetramers, and expressed as percentage positive for CD8+ T cells. The plasma viremia in the same patients was expressed as open circles. (B) The proviral DNA load in PBMC in four of the LTNPs.Back to article page