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Blast exposure causes learning impairment at 3 weeks post-injury but not as early as 7 days (n = 10 per group). A significant difference was seen between groups on (A) acquisition trials (F(2,19) = 18.58; p < 0.001) and (B) the probe trial (F(2,7) = 13.61; p < 0.001). No significant difference was seen in (C) swim speed. ***p < 0.001, **p < 0.01.
