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. Author manuscript; available in PMC: 2009 Jul 6.
Published in final edited form as: Eur J Pharmacol. 2007 Nov 12;580(1-2):161–168. doi: 10.1016/j.ejphar.2007.07.071

Fig. 1.

Fig. 1

Locomotor activities of the young and aged mice at various doses of MK-801. Time course of MK-801-induced locomotor activities in the young (A) and aged mice (B) are shown as beam breaks per 10-minute intervals. The dose of MK-801 (mg/kg) or saline is indicated for each symbol, with open symbols and dotted lines for the young mice (A), and corresponding filled symbols and solid lines for the aged mice (B). n = 10 for all groups, except n = 8 for aged groups at 0.015 and 0.05 mg/kg of MK-801.