Fig. 4.
Change in rectal temperature as a function of nicotine dose administered alone and in combination with dFBr (10 and 32 mg/kg; left) or PNU-120596 (100 mg/kg; right). Abscissae: dose of positive allosteric modulator alone or vehicle (Veh) and dose of nicotine in milligram per kilogram bodyweight. Ordinates: change in rectal temperature from pre-injection baseline (i.e. immediately before time 0) expressed as °C. The same control nicotine dose-response function (circles) is plotted in the left and right panels.