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/ˈsɪs.tiːn/ · noun
(biochemistry) A nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond..
Use cystine when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Cystine means (biochemistry) A nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond..
Common synonyms include E921 when used as an improving agent.
The opposite depends on the specific sense.
Use cystine where its definition matches the intended context.
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