2 h prior to sacrifice , brain free dhpg and mhpg concentrations were significantly reduced by 30 and 40 % , respectively , whereas yohimbine ( 1-20 mg/kg , i.p . ) induced a dose-dependent increase in brain dhpg ( 60-80 % ) and mhpg ( 60-220 % ) concentrations .
C0006104
brain
C0086045
concentrations