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. Author manuscript; available in PMC: 2021 Sep 20.
Published in final edited form as: Addict Biol. 2019 Jul 2;25(5):e12806. doi: 10.1111/adb.12806

Figure 3. Production of ultrasonic vocalizations by call type.

Figure 3.

Morphine exposure and withdrawal increased production of most of the observed call types. Data are expressed as mean ± SEM. * p < 0.05, ** p < 0.01 compared to saline treated animals.