NitroprussideFerricyanidesVasodilator AgentsNitric Oxide DonorsNitric OxideVasodilationAcetylcholineCyclic GMPForearmHypotension, ControlledEndothelium, Vascularomega-N-MethylarginineNG-Nitroarginine Methyl EsterPhenylephrineDose-Response Relationship, DrugBlood PressureNitric Oxide SynthaseVasoconstrictor AgentsArginineMuscle RelaxationGuanylate CyclaseTrimethaphanRegional Blood FlowS-Nitroso-N-AcetylpenicillamineNitroargininePenicillamineEnzyme InhibitorsVascular ResistanceNitroglycerinBradykininOxadiazolesHemodynamicsVasoconstrictionNorepinephrineMolsidomineHeart RateDogsMuscle, Smooth, VascularBaroreflexAorta, ThoracicPlethysmographyMethylene BlueArteriolesRabbitsRats, Sprague-DawleyVasomotor SystemInfusions, Intra-ArterialRats, Inbred StrainsRats, WistarCromakalimMicrocirculationArteriesSympathetic Nervous SystemMesenteric ArteriesIontophoresisPurinonesAortaMuscle ContractionNitroso CompoundsCoronary Vessels15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidTime FactorsPressoreceptorsIndomethacinSwineDibutyryl Cyclic GMPQuinoxalinesHypertensionCyanidesVerapamilHypotensionInjections, Intra-ArterialCoronary CirculationAmino Acid OxidoreductasesSodium NitriteCyclic GMP-Dependent Protein KinasesHydrogen CyanideRats, Inbred WKYMuscle, SmoothLaser-Doppler FlowmetryCells, CulturedDrug InteractionsProstaglandin Endoperoxides, SyntheticAdenosineBenzopyransBiological FactorsInjections, IntravenousS-NitrosoglutathionePotassium ChlorideHydroxocobalaminCardiac OutputInfusions, ParenteralAnesthesiaGuinea PigsNitric Oxide Synthase Type IIIIsoproterenolAtrial Natriuretic FactorHyperemiaMuscle TonusMicrobial Sensitivity Tests