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FTY720-NSC-Exos protected SCMECs under hypoxic conditions. (a) The permeability of the SCMECs was detected by Transwell experiment. (b–e) The protein level of PTEN, p-AKT, and ZO-1 in each groups (−χ ± s, n = 6), ▲P < 0.05, ▲▲P < 0.01 vs. control, ★P < 0.05, ★★P < 0.01 vs. hypoxic, ∗P < 0.05, ∗∗P < 0.01 vs. FTY720, #P < 0.05, ##P < 0.01 vs. NSCs-Exos.
