(99)  Ulcerative colitis  Gingiva Bone marrow  None  Mice  ↓Clinical score↓Colon pathology↓Weight loss  ↓Peripheral blood lymphocyte proliferation↑Infiltration of CD4+CD25+ FoxP3+ Tregs in the colon↓Infiltration of CD4+ lymphocytes in the colon↑IL-10↑IDO↑iNOS↑COX-2↓IL-6↓IL-17↓IFN-γ