《英文msh词典》Graft Enhancement,Immunological
[入口词] Graft Enhancement,Immunological
[主题词] Graft Enhancement,Immunologic
[英文释义] The induction of prolonged survival and growth of allografts of either tumors or normal tissues which would ordinarily be rejected. It may be induced passively by introducing graft-specific antibodies from previously immunized donors,which bind to the graft's surface antigens,masking them from recognition by T-cells; or actively by prior immunization of the recipient with graft antigens which evoke specific antibodies and form antigen-antibody complexes which bind to the antigen receptor sites of the T-cells and block their cytotoxic activity.