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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
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physical entity go
an entity that has physical existence
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thing go
a separate and self-contained entity
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unit, building block go
a single undivided natural thing occurring in the composition of something else
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molecule go
(physics and chemistry) the simplest structural unit of an element or compound
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macromolecule, supermolecule go
any very large complex molecule
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protein go
any of a large group of nitrogenous organic compounds that are essential constituents of living cells
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antibody go
any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response
heterophil antibody, heterophile antibody, Forssman antibody
an antibody found in the blood of someone suffering from infectious mononucleosis
noun.substance

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