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. Author manuscript; available in PMC: 2021 Aug 14.
Published in final edited form as: Exp Clin Psychopharmacol. 2020 Apr 16;29(4):355–365. doi: 10.1037/pha0000368

Figure 3.

Figure 3.

Urine menthol glucuronide and salivary nicotine levels during fixed-puffing bout sessions. (A) Urine menthol glucuronide levels were enhanced at the end of the menthol exposure session only. (B) Salivary nicotine was enhanced with both e-liquid nicotine concentrations (6 mg/mL and 12 mg/mL) after each puffing bout compared to baseline. Twelve mg/mL of nicotine produced higher salivary nicotine levels than 6 mg/mL of nicotine. Data for (A) were log transformed and for (B) were square-root transformed. Vertical bars represent least squares (means. Error bars represent the standard errors of the means. PB1 = post-Bout 1; PB2 = post-Bout 2; PB3 = post-Bout 3). Nic = nicotine.