histocompatibility

Histocompatibility is the property of having the same, or mostly the same, alleles of a set of genes called the major histocompatibility complex. These genes are expressed in most tissues as antigens, to which the immune system makes antibodies. The immune system at first makes antibodies to all sorts of antigens, including those it has never been exposed to, but stops making them to antigens present in the body. If the body is exposed to foreign antigens, as by getting a tissue graft, it attacks the foreign material unless it is histocompatible.
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L'histocompatibilité désigne le taux de compatibilité entre deux organes ou tissus, qui permet à une greffe (d'organe ou de cellules) de ne pas être rejetée. Cette compatibilité dépend des patrimoines génétiques du donneur et du receveur.
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n. (Medicine) quality of being histocompatible; degree to which two people are histocompatible; compatibility of tissues; condition of having antigenic resemblances so that tissues or cells being transplanted from the donor to the recipient are not rejected

(名) 組織適合性

Noun
1. condition in which the cells of one tissue can survive in the presence of cells of another tissue; "a successful graft or translplant requires a high degree of histocompatibility"
(hypernym) organic phenomenon