PSGL-1/SLeX MSCs exhibit enhanced homing to healthy and γ-irradiated mouse BM. (A) Representative images of native MSCs (blue, DiD) and PSGL-1/SLeX MSCs (green, DiI) observed in both healthy and γ-irradiated BM (60× magnification; red, blood, rhodamine-dextran). (B) Quantitative analysis of MSC homing to nonirradiated or γ-irradiated BM. PSGL-1/SLeX MSCs exhibit enhanced homing to both healthy and γ-irradiated BM vs native MSCs (*P < .05, 1-way ANOVA using Tukey’s HSD; error bars represent ± standard error of the mean [SEM] [n = 4 per group]).