الفهرس 
ContentsOnly 14 pages are availabe for public view
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Abstract
Heavy metals including lead although in traces are essential for forms of life higher animals and plants they are taken up the living ecell in the form of cations and their uptake is stricly regulated because most or all of them are toxic in excess in fact such an excess often increases the injurious effect of the deficiencyv lead atomic number 82 is one of the most abundant of the non essential trace elements in the human body report of committee international committee for radiation protection 1959.