Tissue DonorsDeltaretrovirus InfectionsDeltaretrovirus AntibodiesSkinNucleic Acid Amplification TechniquesSkin, ArtificialSkin NeoplasmsCicatrix, HypertrophicSkin DiseasesSkin AbsorptionKeratinocytesEpidermisSkin Physiological PhenomenaBlood DonorsLiving DonorsWound HealingSkin AgingBurnsAdministration, CutaneousTissue EngineeringMaterials TestingBiocompatible MaterialsFibroblastsPsoriasisKeratinsCells, CulturedSkin TestsImmunohistochemistryCollagenSkin PigmentationReverse Transcriptase Polymerase Chain ReactionTime FactorsRNA, MessengerGene ExpressionMice, Inbred BALB CMolecular Sequence DataMice, Inbred C57BLBase SequenceTissue and Organ ProcurementTransplantation, HomologousGraft SurvivalSkin UlcerSkin Diseases, Bacterial