L-tryptophan in depression.
D001921:Brain / Q000378:metabolism; D003863:Depression / Q000188:drug therapy* / Q000378:metabolism; D006801:Humans; D012701:Serotonin / Q000378:metabolism; D014364:Tryptophan / Q000627:therapeutic use*
D012701:Serotonin; D014364:Tryptophan