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  Indian J Med Microbiol
 

Figure 1: The conditioned place preference test for morphine- and methamphetamine-dependent (polydrug) relapse model. *Significant difference from baseline (P < 0.05). Data were presented as mean ± SEM (n = 14) and analyzed using paired samples t test

Figure 1: The conditioned place preference test for morphine- and methamphetamine-dependent (polydrug) relapse model. *Significant difference from baseline (<i>P</i> < 0.05). Data were presented as mean ± SEM (<i>n</i> = 14) and analyzed using paired samples <i>t</i> test