ElastinCarboxypeptidase HCytoplasmic GranulesChemical PrecipitationTropoelastinDesmosineElastic TissueIsodesmosinePancreatic ElastaseProtein-Lysine 6-OxidaseLigamentsCollagenAortic Stenosis, SupravalvularCutis LaxaAortaElasticityMatrix Metalloproteinase 12Williams SyndromeConnective TissueExtracellular MatrixAminopropionitrileMicrofibrilsGastrointestinal ContentsCells, CulturedCattleRNA, MessengerLungFibroblasts