Fig. 5From: HIV-Tat immunization induces cross-clade neutralizing antibodies and CD4+ T cell increases in antiretroviral-treated South African volunteers: a randomized phase II clinical trialNeutralization of Tat/Env complex entry in DC. Baseline values (left panels) and changes from baseline after immunization (right panels) of B-clade Env entry in DC in the absence (a) or presence (b) of B-clade Tat in anti-Tat Ab-positive (n = 13) vaccinees, and anti-Tat Ab-positive (n = 6) or anti-Tat Ab-negative (n = 5) placebos at week 20 and 48 from the first immunization. Reduction of Env entry in DC by sera indicates neutralization. Student’s t test was applied to evaluate the changes from baseline within and between treatment groupsBack to article page