VasodilationNitric OxideEndothelium, VascularVasodilator AgentsAcetylcholineNitroglycerinNitroprussideRegional Blood FlowBrachial ArteryVasoconstrictionEndotheliumVasoconstrictor AgentsNitric Oxide SynthaseArteriesMuscle, Smooth, VascularDose-Response Relationship, DrugForearmArteriolesEndothelium, CornealVascular Resistanceomega-N-MethylarginineHyperemiaCoronary VesselsNG-Nitroarginine Methyl EsterMicrocirculationEnzyme InhibitorsCoronary CirculationBlood Flow VelocityNitric Oxide Synthase Type IIIMesenteric ArteriesVasomotor SystemBlood PressureEndothelium-Dependent Relaxing FactorsAdenosineNitroarginineLaser-Doppler FlowmetryBiological FactorsIndomethacinHemodynamicsDogsBradykininRats, Sprague-DawleyArginineCells, CulturedCyclooxygenase InhibitorsPia MaterPlethysmographySkinEndothelial CellsPulmonary CirculationInfusions, Intra-ArterialAorta, ThoracicAortaNitric Oxide DonorsBlood VesselsTime FactorsSwineRats, WistarPotassium Channel BlockersRabbitsEndothelium, LymphaticCyclic GMPAnoxiaSignal TransductionCerebral ArteriesBretylium TosylatePhenylephrinePotassium Channels15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidPulmonary ArteryGlyburideHeart RatePapaverinePotassium ChlorideMyographyMice, Inbred C57BLNorepinephrineCell AdhesionProstaglandinsCalcitonin Gene-Related PeptidePerfusionCalciumRenal CirculationEndothelin-1Guanylate CyclaseCerebrovascular CirculationSplanchnic CirculationSweatingSkin TemperatureHypertensionMice, Knockout