AlkaloidsErgot AlkaloidsIndole AlkaloidsPyrrolizidine AlkaloidsVinca AlkaloidsCinchona AlkaloidsBerberine AlkaloidsAmaryllidaceae AlkaloidsAconitumMolecular StructureAporphinesClavicepsBenzylisoquinolinesCatharanthusDelphiniumSolanaceous AlkaloidsPlant ExtractsBerberineStereoisomerismNeotyphodiumRutaceaeCoptisPlant PoisoningStructure-Activity RelationshipMagnetic Resonance SpectroscopyErgotamineErgotismLycopodiumLysergic AcidRubiaceaePapaverEphedraHarmineBelladonna AlkaloidsCyclizationPlant BarkPlants, MedicinalAspidospermaPapaveraceaeHeterocyclic Compounds with 4 or More RingsPoriferaAnnonaceaeChromatography, High Pressure LiquidEphedrineErgolinesIndicators and ReagentsDiterpenesOpiumSenecioRauwolfiaMolecular ConformationUncariaVeratrum AlkaloidsAconitineInhibitory Concentration 50HypocrealesDrug Screening Assays, AntitumorIsoquinolinesHarmalineEpichloeBenzophenanthridinesLiliaceaeMitragynaSpectrophotometry, UltravioletIbogaineIndolizinesCorydalisEphedra sinicaApocynaceaeIndolizidinesChromatography, Thin LayerSpectrophotometry, InfraredVinblastineAmphibian VenomsQuinolizinesAntineoplastic Agents, PhytogenicMolecular Sequence DataKineticsSpiro CompoundsPlant LeavesMass SpectrometryHeterocyclic Compounds, 3-RingNoscapineThalictrumDose-Response Relationship, DrugAtropa belladonnaStrychnosDrugs, Chinese HerbalPlant RootsCarbolinesPhenanthridinesAlstoniaErgonovineLupinusVeratrumPoaceaeLauraceaeErythrinaTabernaemontanaHematoporphyrin Derivative