the period of active attempts to escape from the cylinder was lengthened by injecting the animals with the following antidepressants : imipramine ( imi ) , amitriptyline ( ami ) , doxepin ( dos ) , mianserin ( mia ) , danitracen ( dan ) , iprindole ( ipr ) , as well as cyproheptadine ( cyp ) , even if they were administered only once .
C0003289
antidepressants
C0013085
doxepin