Figure 1. Dose-response curves for the effects of chronic nicotine treatment of mice differing in β4 genotype for select tests.
Mean ± SEM (N =4-9) for responses of β4++, β4+− and β−− mice treated with saline, 1.0 mg/kg/hr nicotine or 4.0 mg/kg/hr nicotine as indicated and acutely injected with the indicated nicotine dose. The lines are least squares curve fits of the results as described in the Methods.