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  Indian J Med Microbiol
 

Figure 2: The effect of acute and chronic treatment of tramadol in combination with adrenergic blockers on duration of immobility in tail suspension test. The values are mean ± SD; n=6. *P<0.05 when compared with acute treatment

Figure 2: The effect of acute and chronic treatment of tramadol in combination with adrenergic blockers on duration of immobility in tail suspension test. The values are mean ± SD; <i>n</i>=6. *<i>P</i><0.05 when compared with acute treatment