
Trace Elements
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Ultra Trace Elements | ![]() |
I. Criteria for essentiality of trace elements
- Chemically suitable for biological functions
- Low molecular weight
- Proper atomic structure
- Transition element
- Must form chelates
- Act as a catalyst
- Ubiquitous in earth's crust and sea water
- Present in plants and animals
- Relatively low toxicity
- Homeostatic mechanisms implied
Controlled serum levels
Rapid excretion rates
Lack of excessive accumulation - Its deficiency must reproductively result in an impairment of a function, or functions, from optimal to suboptimal
Trace Elements


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