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Behavioral evaluation of saline and ketamine injected rats. a-a’’’ Locomotor activity. b-b’’’ Stereotypy. Animal behavior was scored by the ANY-maze video tracking system. Tests were started 2 h after the last ketaamine injection and rats were continuously monitored over 20 min. Statistical differences between saline and ketamine-treated rats are indicated by *P < 0.05; control group n = 12, tested group n = 12
