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Medical Term:

hemoglobin Constant Spring


an abnormal hemoglobin having an extended polypeptide chain (31 additional amino acyl residues) on the a chain (thus, the a chain is 172 amino acids long); approximately 20% of the patients with Hb H disease also have this defect.

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