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. Author manuscript; available in PMC: 2009 Dec 1.
Published in final edited form as: Pharmacol Biochem Behav. 2008 Jul 25;91(2):217–222. doi: 10.1016/j.pbb.2008.07.014

Fig. 2.

Fig. 2

Effect of modafinil on sleep latency. Dbh +/− and Dbh −/− mice were placed in observation chambers, injected with vehicle or modafinil (6.25, 12.5, or 25 mg/kg, i.p.) 4 hours later, and observed until the onset of sleep. Shown is latency to sleep following the injection. * P < 0.05, ** P < 0.001 compared to vehicle control for that genotype. † P < 0.01 compared to Dbh +/− mice for that dose.

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