Figure 4From: Role of complement and antibodies in controlling infection with pathogenic simian immunodeficiency virus (SIV) in macaques vaccinated with replication-deficient viral vectorsNAb response determined by a yield reduction assay. Before challenge (indicated by a black arrow) nAbs were measured in monkeys vaccinated with a heterologous prime-boost regimen (boosts are marked by dotted arrows, additional asterisks indicate boosts of group 1 only). After challenge nAbs were investigated for all four cohorts for the indicated period of time.Back to article page