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Decreased hydraulic conductivity (Lp) owing to dexamethasone (DEX) treatment after blast injury. Hydraulic conductivity was significantly reduced—indicating a tighter barrier—in DEX-treated cultures compared with vehicle-treated injured cultures from days 1 to 3 after injury. Elevated Lp of vehicle-treated injured cultures spontaneously recovered to vehicle-treated sham levels by day 3 postinjury. *P<0.05; ±s.e.m.; n⩾7 per group.
