Figure 1. hCD46tg mice were given 0, 500, 2,000 or 5,000 mIU MV-nAb i.v., respectively, one day prior i.m. immunization with 1 × 10⁵ pfu rMV-SIVgag. UV-inactivated virus and mice that did not receive measles nAb prior immunization served as controls. Measles antibody titers were determined by endpoint titration at day one and week 2. Fold increase of the median titers between these two time-points are shown in the different groups.