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noun, Biochemistry.
a copper-containing enzyme that catalyzes the breakdown of monoamines.
Abbreviation: MAO.
(biochem) an enzyme present in nerve tissue that is responsible for the inactivation of neurotransmitters MAO

monoamine oxidase n.
Abbr. MAO
An enzyme in the cells of most tissues that catalyzes the oxidative deamination of monoamines such as serotonin.


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