(A and B) Representative imaging of WT versus Bst2−/− HSCs before or 24 h after systemic treatment with IFNγ. Data are representative of 2 independent experiments with total n = 39–61 cells per group and were analyzed by Kruskal-Wallace one-way analysis of variance. Mean distances: WT control, 1.72 μm, n = 61; WT IFNγ, 4.40 μm, n = 41; BST2 knockout (KO) control, 2.80 μm, n = 56; BST2 KO IFNγ, 3.18 μm, n = 39. **p < 0.01. Scale bars are 10μm; ns, not significant; error bars represent mean ± SD.