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See also: non-self
- (philosophy, psychology) Any entity other than oneself.
- 2013 May-June, Katrina G. Claw, “Rapid Evolution in Eggs and Sperm”, in American Scientist, volume 101, number 3:
- In plants, the ability to recognize self from nonself plays an important role in fertilization, because self-fertilization will result in less diverse offspring than fertilization with pollen from another individual.
- (immunology, uncountable) All agents and substances that are not the body's own.
- 1961, George F. Vande Woude, George Klein, Advances in Cancer Research:
- In his classic monograph describing the clonal selection theory of the immune response, Burnet (1959) suggested that the immune system distinguishes between self (no antibody response) and nonself (antibody response).