Fig. 1

The effect of pioglitazone (5, 10, 20, 40 mg/kg; a) and its combination with GW-9662 (2 mg/kg; b) on the completion of morphine analgesic tolerance [2]
The effect of pioglitazone (5, 10, 20, 40 mg/kg; a) and its combination with GW-9662 (2 mg/kg; b) on the completion of morphine analgesic tolerance [2]