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Medical Term:


Pronunciation: ho'mo-sis'te-en, -sis'ten


A homologue of cysteine, produced by the demethylation of methionine, and an intermediate in the biosynthesis of l-cysteine from l-methionine via l-cystathionine. Elevated levels of homocysteine have been associated with certain forms of heart disease.

See Also: folic acid

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.