Effect of maturation on virus replication by HIV-infected DC. From 48 hours PI with HIV-1_Ba-L, DC obtained as in Figs1 and 2 were cultured under standard conditions (std) with (▪) or without (•) TGFβ1, or they were induced to mature by adding CD40LT (▵) or MCM (◊) to GM-CSF/TNF-/IL-4, or they were cultured with only GM-CSF/TNF- (▴). Virus production is expressed as in Fig 1. Results of one of three experiments.