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. Author manuscript; available in PMC: 2010 Jun 16.
Published in final edited form as: Neuroscience. 2009 Mar 19;161(1):301–310. doi: 10.1016/j.neuroscience.2009.03.020

Figure 3.

Figure 3

Effects of s.c. administration of morphine (10 mg/kg), fentanyl (0.1 mg/kg), and etorphine (0.003 mg/kg) on the behavioral seizure score and the brain BDNF mRNA expression. Each animal was scored according to the highest class of behavioral manifestation observed during the 1 h observation period. BDNF mRNA expression was determined 3 h after drug administration. Quantification of BDNF mRNA signals in different brain regions are represented as mean percent of vehicle. Each value represents mean ± S.E.M. (n=4–6). *, P<0.05 compared with vehicle.