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Heme

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heme

[heem]
–noun Biochemistry.
a deep-red iron-containing blood pigment, C34H32N4O4Fe, obtained from hemoglobin.

Origin:
1920–25; shortened form of hematin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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heme   (hēm)   
n.  The deep red, nonprotein, ferrous component of hemoglobin, C34H32FeN4O4.

[Short for hematin.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: heme
Variant: or chiefly British haem /'hEm/
Function: noun
: the deep red iron-containing prosthetic groupC34H32N4O4Fe of hemoglobin and myoglobin that is a ferrous derivative of protoporphyrin and readily oxidizes to hematin or hemin called also protoheme
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

heme (hēm)
n.
The deep red, oxygen-carrying, nonprotein, ferrous component of hemoglobin. Also called reduced hematin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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