Injection of swine peripheral blood mononuclear cells into mice with severe combined immunodeficiency (SCID), resulted in the stable long-term establishment of a functional swine immune system (SCID-sw). Swine immunoglobulins were present in the serum of SCID-sw mice and swine cells were detected in the blood as well as in lymph nodes and spleen using monoclonal antibodies raised against cell subpopulations. Swine lymphocytes from reconstituted SCID mice responded to specific antigens or mitogens. When SCID-sw mice were challenged with African swine fever (ASF) virus, ASF virus-infected cells were detected in blood and spleen, and antiviral antibodies and virus-specific T cells were generated.


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