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In this third volume in the series "Topics in Hematology," iron metabolism plays a prominent role, even though iron is not a trace element. Underwood of Australia, whose Trace Elements in Human and Animal Nutrition is now in its 4th edition, also has a chapter on iron. This raises the philosophical and perhaps inconsequential point of whether elements measurable in milligrams, or micrograms, or nanograms should be lumped together, but the word "trace" is inaccurate. Better terminology might be "minerals in the metabolism of humans and animals".
Prasad has very thoroughly discussed the biochemistry, enzymology and metabolism of 12 elements
Trace Elements and Iron in Human Metabolism.. Ann Intern Med. 1979;91:339–340. doi: 10.7326/0003-4819-91-2-339_3
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Published: Ann Intern Med. 1979;91(2):339-340.
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