Dendritic Cells/physiology; Enzyme Inhibitors/pharmacology; Graft vs Host Disease/prevention & control; Histone Deacetylase Inhibitors; Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism; Animals; Antigens, CD/metabolism; Bone Marrow Transplantation; Cytokines/metabolism; Dendritic Cells/drug effects; Dendritic Cells/transplantation; Female; Gene Expression/drug effects; Graft vs Host Disease/pathology; Humans; Hydroxamic Acids/pharmacology; Indoleamine-Pyrrole 2,3,-Dioxygenase/genetics; Lipopolysaccharides/pharmacology; Lymphocyte Activation/drug effects; Mice; Mice, Inbred BALB C; Mice, Inbred C3H; Mice, Inbred C57BL; Mice, Inbred Strains; Mice, Knockout; RNA, Small Interfering/genetics; Survival Analysis; T-Lymphocytes/drug effects; T-Lymphocytes/immunology; T-Lymphocytes/metabolism; Vorinostat