Biological Role and Precautions
Only manganese has a role in the human body. It is an essential trace nutrient, with the body containing approximately 10 milligrams at any given time, being mainly in the liver and kidneys. Many enzymes contain manganese, making it essential for life, and is also found in chloroplasts. Technetium, Rhenium, and Bohrium have no known biological roles. Technetium is however used in radioimaging.
Read more about this topic: Group 7 Element
Famous quotes containing the words biological, role and/or precautions:
“If the most significant characteristic of man is the complex of biological needs he shares with all members of his species, then the best lives for the writer to observe are those in which the role of natural necessity is clearest, namely, the lives of the very poor.”
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