Graft vs Host ReactionGingival RecessionGingivoplastyConnective TissueGraft vs Host DiseaseTransplantsTooth RootThoracic DuctGingivaSurgical FlapsRadiation EffectsTransplantation ImmunologySpleenTransplantation, HomologousTissue EngineeringTissue ScaffoldsLymphocytesMesenchymal Stem Cell TransplantationGraft SurvivalGraft vs Tumor EffectT-LymphocytesGraft vs Leukemia EffectGraft Occlusion, Vascular