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n. A state or condition in which the absence of immunological interference permits the grafting of tissue or the transfusion of blood without rejection.

n. The condition of being histocompatible

n. The toleration of grafts between genetically similar individuals

n. condition in which the cells of one tissue can survive in the presence of cells of another tissue

"Some experiments, which I carried out at about the same time that I was becoming interested in histocompatibility genetics, led to the discovery of immunological enhancement, the curious inversion of the expected growth inhibition seen with certain tumors when transplanted to pre-injected mice."

organic phenomenon   

histocompatibility gene    histocompatibility antigen   

function-associated    natriuretic    cell-surface    glycolipid    hydrogen-bonded    cognate    glucagon-like    lymphoblastic    primary-response    opsin