Vascular ResistanceMuscle, Smooth, VascularMuscle, SmoothHemodynamicsDrug ResistanceBlood PressurePulmonary CirculationMyocytes, Smooth MuscleDrug Resistance, MicrobialDrug Resistance, BacterialCardiac OutputHypertension, PulmonaryRegional Blood FlowDrug Resistance, NeoplasmPulmonary ArteryVasoconstrictionDogsDrug Resistance, MultipleDisease ResistanceRenal CirculationForearmHeart RateDrug Resistance, ViralDrug Resistance, Multiple, BacterialVasodilationVasodilator AgentsNitric OxideAnti-Bacterial AgentsMicrobial Sensitivity TestsDose-Response Relationship, DrugPulmonary Wedge PressureBlood Flow VelocityNorepinephrineVasoconstrictor AgentsTime FactorsBlood CirculationArteriesAortaNitroprussideSplanchnic CirculationPerfusionHypertensionCells, CulturedKidneySympathetic Nervous SystemAirway ResistanceMutationAnoxiaTetracycline ResistanceRats, Sprague-DawleyVasomotor SystemMuscle ContractionLungAngiotensin IIReflexCoronary CirculationLower Body Negative PressureMolecular Sequence DataPressoreceptorsPlant DiseasesPenicillin ResistanceEnzyme InhibitorsPursuit, SmoothOxygenPlethysmographySwineEpoprostenolDrug Resistance, FungalCentral Venous PressureHypotensionNG-Nitroarginine Methyl EsterPhenylephrineCardiovascular SystemOxygen ConsumptionBlood VolumeMesenteric ArteriesCoronary VesselsMuscle TonusEndothelin-1RabbitsEndothelium, VascularNitric Oxide SynthaseReceptors, EndothelinNitroglycerinSheepCapillary ResistanceSignal TransductionAntihypertensive AgentsBacterial ProteinsAcetylcholinebeta-Lactam ResistanceBlood Gas AnalysisEndothelinsCardiac CatheterizationResistance TrainingTracheaPhenotypeAnesthesiaArginineCarotid Sinus