haemoglobin Mmedical dictionary

<chemical>

A group of abnormal haemoglobins in which amino acid substitutions take place in either the alpha or beta chains but near the haem iron. This results in facilitated oxidation of the haemoglobin to yield excess methaemoglobin which leads to cyanosis.

Chemical name: Haemoglobin M

American spelling: hemoglobin M

(12 Dec 1998)