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The specific binding of [3H]flunitrazepam ([3H]Flu) to GABAA receptors at rostral (R), medial (M), and caudal (C) levels of the LC from non-smokers (open bars, n = 21) and smokers (filled bars, n = 19). Data shown were generated by measuring the cell-dense region of the LC. No significant differences between the two study groups were observed.
