Quinolinic AcidQuinolinic AcidsKynurenineAcetic Acid3-Hydroxyanthranilate 3,4-Dioxygenase3-Hydroxyanthranilic AcidPentosyltransferasesTryptophanTryptophan OxygenaseKynurenine 3-MonooxygenaseNeurotoxinsNicotinic AcidsHarmineKynurenic AcidNiacinCorpus StriatumTriosesHydroxyindoleacetic AcidNADIndoleamine-Pyrrole 2,3,-DioxygenaseHuntington DiseasePicolinic AcidsConvulsantsBrain2-Amino-5-phosphonovalerateIndoleacetic Acids