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That which the immune system identifies as foreign to the body.


1. (Philosophy) (in philosophy) that which is not the 'self', that is the external world
2. (Physiology) immunol matter which is foreign to a particular body, thus triggering an immune response when it enters the body
(Physiology) immunol of or pertaining to what is foreign to the body



any antigen-bearing foreign material that enters the body and normally stimulates an attack by the body's immune system (disting. from self).
References in periodicals archive ?
In this experiment, reduced phagocytic rates were observed in mussels with fluctuating granulocyte:hyalinoycte ratios and as observed in bivalves exposed to metals, it appears to be more of a suppressive effect of the biotoxins rather than a stimulatory response because of the recognition of nonself particles.
I saw the aggregates as impermanent, I saw them as suffering and nonself.
Quantitative assessment of the concentration of nonself plasma ccfDNA relies on distinct genetic differences between recipient and donor or mother and fetus.
In contrast, children that are field-independent are more socially independent and have a greater capacity to differentiate self and nonself as an outcome of their analytical cognitive style.
Ali: Reciprocal continuity and common fixed points of nonself mappings, Taiwanese J.
In other words, metaphysically speaking, one's cells, tissues, and organs are specified as self rather than as nonself by one's soul informing one's matter.
Jungck, fixed points for noncontinuous nonself maps on nonmetric spaces, Far East J.
I introduce the concept of major histocompatibility markers (MHC) on the surface of cells and how the immune system uses these markers to recognize self from nonself.
70) Both in traditional Advaita and in contemporary presentations of Advaita, various types of arguments have been offered in defense of this belief, to show that the relational experiences based on the distinctions between self and nonself are sublated by the higher nonrelational experience of unity with ultimate reality.
The presence of nonself HLA molecules activate the recipient's T cells, causing an adaptive immune response that results in elimination of donor tissue and graft rejection.
Born of Ettinger's own psychoanalytic practice, this influential concept refers to the intrauterine environment in which two bodies, the subjectivities of mother and child, coexist in the final stages of pregnancy: an unconscious space where self and nonself share a vaguely defined terrain in which, seeking psychic affinities, they are constantly reorganized.