Fig. 3From: An Antigenic Threshold for Maintaining Human Immunodeficiency Virus Type 1-specific Cytotoxic T Lymphocytes Cytotoxic T lymphocyte effector (CTLe) numbers in the patients whose viremia is well-suppressed by highly active antiretroviral therapy (HAART) and the average CTLe levels in long-term nonprogressors (LTNPs). Back to article page