Figure 1From: Methamphetamine-induced changes in the striatal dopamine pathway in μ-opioid receptor knockout miceMETH (10 mg/kg)-evoked stereotyped behaviors in wild-type and μ-OR knockout mice that were exposed to METH for 7 days. METH (10 mg/kg)-evoked stereotyped behaviors in wild-type and μ-OR knockout mice that were exposed to METH for 7 days. Mean values ± SEM are presented. Numbers in parentheses represent the number of animals studied. * indicates a significant difference (P < 0.05) from the corresponding value in METH-sensitized wild-type mice.Back to article page