title: Plasma opioid activity in manic-depressive illness.
mesh_terms: D001714:Bipolar Disorder / Q000097:blood* / Q000523:psychology; D003863:Depression / Q000097:blood; D004723:Endorphins / Q000097:blood*; D005059:Euphoria; D005260:Female; D006801:Humans; D008875:Middle Aged; D011595:Psychomotor Agitation / Q000097:blood
chemical_list: D004723:Endorphins