Author: Glossary
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Aminoacidemia
Excess of amino acids in the blood.
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Semi-essential amino acid
An amino acid of which an adequate amount must be consumed in the diet to prevent the use of essential amino acids to synthesize it. An example is tyrosine. Without adequate dietary intake, the essential amino acid, phenylalanine, is used to make tyrosine.
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Conditionally dispensable amino acid
An amino acid that becomes essential when a specific clinical condition is present.
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Amine
Any one of a group of nitrogen-containing organic compounds that are formed when one or more of the hydrogens of ammonia have been replaced by one or more hydrocarbon radicals.
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Amnesic amimia
Amimia in which signs and gestures can be made but their meaning is not remembered.
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Amide
Any organic substance that contains the monovalent radical CONH2. It is usually formed by replacing the hydroxyl ( — OH) group of the — COOH by the — NH2 group.
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Amidase
A deamidizing enzyme; one that catalyzes the hydrolysis of amides.
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Ametrometer
An instrument for measuring the degree of ametropia.
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Americium
A metallic radioactive element, atomic number 95. The atomic weight of the longest-lived isotope is 243.
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American standard association rating
A measure of photographic film speed, created by the American Standard Association.