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. Author manuscript; available in PMC: 2010 Oct 13.
Published in final edited form as: Handb Exp Pharmacol. 2009;(192):29–60. doi: 10.1007/978-3-540-69248-5_2

Fig. 2.

Fig. 2

Blood nicotine concentrations during and after cigarette smoking for 9 min, oral snuff (2.5 g), chewing tobacco (average 7.9 g), and nicotine gum (two 2-mg pieces). Average values for 10 subjects (±SEM). Reprinted from Benowitz et al. (1988) with permission from American Society for Clinical Pharmacology and Therapeutics