the effect of tricyclic antidepressants on pb hypnosis in pb-tolerant and nontolerant rats was apparently not related to change in central nervous system ( cns ) sensitivity to pb , since at the time of awakening there were no significant differences in the concentrations of unmetabolized pb in either the plasma or brain of tricyclic antidepressant-treated animals as compared to controls .
C0086045
concentrations
C0006104
brain