title: Total and free tryptophan concentration in the plasma of depressive patients.
mesh_terms: D000328:Adult; D003863:Depression / Q000097:blood*; D005260:Female; D006801:Humans; D008875:Middle Aged; D014364:Tryptophan / Q000097:blood* / Q000134:cerebrospinal fluid
chemical_list: D014364:Tryptophan