DC3.2-Rab39a cells (Rab39a KO with dox-inducible Rab39a) were incubated overnight with or without 1 µg/ml dox to induce Rab39a expression. 1x105 cells were then fed with Ova-Fe and exposed to reporter T cells as in (A). Error bars show SD of duplicate wells. None of the bead concentrations are p < 0.05 for Rab39a siRNA vs β2m using two-way ANOVA. Representative plot of 3 independent experiments 