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entity go
that which is perceived or known or inferred to have its own distinct existence (living or nonliving)

physical entity go
an entity that has physical existence

thing go
a separate and self-contained entity

unit, building block go
a single undivided natural thing occurring in the composition of something else

molecule go
(physics and chemistry) the simplest structural unit of an element or compound

macromolecule, supermolecule go
any very large complex molecule

protein go
any of a large group of nitrogenous organic compounds that are essential constituents of living cells

simple protein go
a protein that yields only amino acids when hydrolyzed

globulin go
a family of proteins found in blood and milk and muscle and in plant seed

serum globulin
globulins occurring in blood serum and containing most of the antibodies of the blood

noun.substance

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