Figure 6
From: Evolution of subtype C HIV-1 Env in a slowly progressing Zambian infant
Contemporaneous and non-contemporaneous plasma neutralization activity against infant 6-month (A), 12-month (B) and 48-month (C) viral isolates, determined in TZM-BL cells. The test plasma was diluted to 1:20, 1:100 and 1:500. Virus production in the supernatants was monitored by luciferase activity 2 days post infection. Luciferase activity in the control wells containing no plasma was defined as 100 %, and the neutralization titer of the test plasma was calculated relative to this value.