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Wiktionary
histocompatibility

n. 1 The condition of being histocompatible 2 The toleration of grafts between genetically similar individuals

WordNet
histocompatibility

n. 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"

Wikipedia
Histocompatibility

Histocompatibility, or tissue compatibility, is the property of having the same, or sufficiently similar, alleles of a set of genes called human leukocyte antigens (HLA). Histocompatibility and histocompatibility testing is most relevant for topics related to whole organ, tissue, or stem cell transplants. HLA is the human form of the major histocompatibility complex (MHC) genes found in all vertebrates. On a population level there is a great number of different alleles at each HLA locus on chromosome 6 at 6p21.3 in humans with new ones being continuously discovered. Each individual inherits two different HLA alleles. Each of these alleles contain six loci (location on the chromosome) which code for major histocompatibility complex (MHC) proteins. These genes are codominantly expressed meaning every individual expresses each of the inherited alleles, both paternal and maternal. This results in a mixture of different types of MHC proteins for every individual. The similarity or difference of one individual's HLA alleles, and therefore MHC proteins, to another person's is what makes the tissues either compatible or incompatible.

Usage examples of "histocompatibility".

Like something that the histocompatibility complex had determined was nonself, different.

You're goal is to move the gene for a minor histocompatibility antigen from one chromosome to another.

Youre goal is to move the gene for a minor histocompatibility antigen from one chromosome to another.

His current quest was to find a transponase to handle a minor histocompatibility gene on the Y chromosome.