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Normally, protein is not found in urine. This is because the kidney is supposed to keep large molecules, like protein, in the blood and only filter out smaller impurities. Even if
http://wiki.answers.com/Q/Why_protein_is_not_norma...
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Kidneys filter out the protein. Prescence of protein means that filters are not working and give an indication for a diseased kidney.
http://wiki.answers.com/Q/Why_should_protein_not_b...
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Ok, let's analyse it in biochemistry and phisiological way. First up, urine is the product filtered by your kedney from blood. urine include something you didn't need any more, and
http://wiki.answers.com/Q/Why_are_protein_found_in...
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Proteins are rather large in molecular terms. When the urine is made in the kidneys the first step is filtering through a membrane. The holes in this membrane are not large enough
http://wiki.answers.com/Q/Why_are_protein_molecule...
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