Hydrogen SulfideSulfidesCystathionine gamma-LyaseOxidative StressNitric OxideAlkynesCystathionine beta-SynthaseNitric Oxide SynthasePaperExtraembryonic MembranesHydrogen PeroxideKATP ChannelsHydrogenChorionNitric Oxide Synthase Type IIAmnionHydrogen BondingNitric Oxide Synthase Type IIINitric Oxide DonorsGlycineRats, Sprague-DawleyNitric Oxide Synthase Type IMyometriumAntioxidantsReactive Oxygen SpeciesNG-Nitroarginine Methyl EsterNitritesOxidation-ReductionArginineThiosulfatesEnzyme InhibitorsVitamin USuperoxide DismutaseOxidantsomega-N-MethylarginineGlutathioneLipid PeroxidationNitratesCatalase