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  Indian J Med Microbiol
 

Figure 4: The total number of passive and active lever pressings was compared between each group. The active lever pressing was significantly higher than the passive only in the morphine group (P < 0.05). The total number of active lever pressing reduced after injection of AA and there was no significance with passive lever pressing in the morphine + AA group

Figure 4: The total number of passive and active lever pressings was compared between each group. The active lever pressing was significantly higher than the passive only in the morphine group (<i>P</i> < 0.05). The total number of active lever pressing reduced after injection of AA and there was no significance with passive lever pressing in the morphine + AA group