Quinolinic AcidQuinolinic AcidsKynurenine3-Hydroxyanthranilate 3,4-Dioxygenase3-Hydroxyanthranilic AcidPentosyltransferasesTryptophan OxygenaseTryptophanKynurenine 3-MonooxygenaseNeurotoxinsNicotinic AcidsHarmineKynurenic AcidNiacinCorpus StriatumTriosesNADIndoleamine-Pyrrole 2,3,-DioxygenaseHuntington DiseasePicolinic AcidsConvulsantsBrain2-Amino-5-phosphonovalerate