different between cystine vs cysteamine

English

From Ancient Greek ?????? (kústis, “bladder”), where it was found.

cystine (countable and uncountable, plural cystines)

(chemistry) A nonessential amino acid formed by the oxidation of cysteine; it contains two cysteine residues linked by a disulfide bond.

cysteamine (countable and uncountable, plural cysteamines)

(biochemistry) The simplest stable aminothiol, a degradation product of the amino acid cysteine, used to treat cystine excretion disorders and radiation sickness.

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