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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Biol Psychol. 2015 Feb 23;107:10–15. doi: 10.1016/j.biopsycho.2015.02.008

Figure 2.

Figure 2

Scatter plot depicting the relationship between leptin levels (ng/mL) during baseline and MPQ total scores after cold pressor pain and after thermal pain in smokers (x symbols) and nonsmokers (closed circles).