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Role of the Liver in Peripheral Tolerance: Induction Through Oral Antigen Feeding

Using a murine liver transplant model, we studied the liver's role in peripheral tolerance. Livers from BALB/c mice fed with ovalbumin (OVA) at either a low or high dose were transplanted into syngeneic recipients. Non‐fed recipients were controls. Orthotopic liver transplantation (OLTx) was followed by OVA immunization and delayed‐type hypersensitivity (DTH) challenge. The ex vivo adoptive transfer effect of liver nonparenchymal cells (NPCs) or spleen cells (SCs) from OVA‐fed mice was examined. In vitro proliferative assays and cytokine profiles were conducted on NPCs and SCs from transplant recipients.