Tryptophan HydroxylaseSerotoninSerotonin Plasma Membrane Transport ProteinsReceptors, SerotoninReceptor, Serotonin, 5-HT2AReceptor, Serotonin, 5-HT1ASerotonin Uptake InhibitorsSerotonin AntagonistsReceptor, Serotonin, 5-HT2CReceptor, Serotonin, 5-HT2BReceptors, Serotonin, 5-HT2Serotonin AgentsReceptor, Serotonin, 5-HT1BSerotonin Receptor AgonistsReceptors, Serotonin, 5-HT1Serotonin SyndromeSerotonin 5-HT2 Receptor AntagonistsReceptors, Serotonin, 5-HT3Serotonin 5-HT2 Receptor AgonistsSerotonin 5-HT1 Receptor AgonistsReceptors, Serotonin, 5-HT4Vitamin A DeficiencySerotonin 5-HT1 Receptor AntagonistsDeficiency Diseasesalpha 1-Antitrypsin DeficiencyHydroxyindoleacetic AcidVitamin B 12 DeficiencyFluoxetineVitamin D Deficiency5-HydroxytryptophanSerotonergic NeuronsCitalopramFolic Acid DeficiencyKetanserin