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CTAP and DAMGO were injected in the NAc core alone or in combination. The graphs show the effects of CTAP injection (8 μg) on the increase in licking caused by 0.25 μg DAMGO (A) or 2.5 μg DAMGO (B).
#, ###: significant difference from saline injection (p < 0.05, 0.001).
*, **, ***: significant statistical difference from DAMGO injection group (p < 0.05, 0.01, 0.001).
