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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Neurosci Biobehav Rev. 2017 May 29;85:117–125. doi: 10.1016/j.neubiorev.2017.05.019

Figure 1. Individual differences exist in genetically highly homogeneous populations.

Figure 1

Scatter plot depicting individual differences within alcohol preferring Marchigian-Sardininan (msP) and Wistar rat populations in (A) operant alcohol self-administration under fixed ratio condition, (B) break point under progressive ratio contingency, (C) relapse to alcohol seeking elicited by exposure to environmental cues previously associated to alcohol self-administration, and (D) relapse elicited by the pharmacological stressor yohimbine (1.25 mg/kg, i.p.) in rats previously trained to self-administer 10% alcohol solution.