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Definition of Histocompatibility
1. Noun. Condition in which the cells of one tissue can survive in the presence of cells of another tissue. "A successful graft or transplant requires a high degree of histocompatibility"
Generic synonyms: Organic Phenomenon
Medical Definition of Histocompatibility
1. If tissues of two organisms are histocompatible, then grafts between the organisms will not be rejected. If, however, major histocompatibility antigens are different then an immune response will be mounted against the foreign tissue. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)