title: Total and non-bound tryptophan in unipolar illness.
mesh_terms: D000328:Adult; D000929:Antidepressive Agents, Tricyclic / Q000627:therapeutic use; D003863:Depression / Q000097:blood* / Q000188:drug therapy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011485:Protein Binding; D014364:Tryptophan / Q000097:blood*
chemical_list: D000929:Antidepressive Agents, Tricyclic; D014364:Tryptophan