
Zinc deficiency can occur in soils, plants, and animals. In animals, including humans, it is defined either qualitatively as insufficient zinc to meet the needs of the body and thereby causing clinical manifestations, or quantitatively as a serum zinc level below the normal range. Normal values for soils and plants, especially crops, have also bee...
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http://en.wikipedia.org/wiki/Zinc_deficiency

(from the article `nutritional disease`) A constituent of numerous enzymes, zinc plays a structural role in proteins and regulates gene expression. Zinc deficiency in humans was first ...
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http://www.britannica.com/eb/a-z/z/8

: Deficiency of zinc is associated with short stature, anaemia, increased pigmentation of skin (hyperpigmentation), enlarged liver and spleen (hepatosplenomegaly), impaired gonadal function (hypogonadism), impaired wound healing, and immune deficiency. (for a genetic disorder that impairs zinc uptake, please see acrodermatitis enteropathica). Accor...
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http://www.encyclo.co.uk/local/20973

Zinc deficiency: Lack of zinc in the body. According to the National Academy of Sciences, the Recommended Dietary Allowances of zinc are 12 milligrams per day for women and 10 milligrams per day for men. Food sources of zinc include meat including liver, eggs, seafood, nuts and cereal. Deficiency of zinc is associated with short stature, anemia, in...
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http://www.medterms.com/script/main/art.asp?articlekey=6067

[
n] - a deficiency caused by inadequate zinc in the diet or by liver disease or cystic fibrosis or other diseases
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http://www.webdictionary.co.uk/definition.php?query=zinc%20deficiency
noun a deficiency caused by inadequate zinc in the diet or by liver disease or cystic fibrosis or other diseases
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https://www.encyclo.co.uk/local/20974
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