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With the passage  of vertebrates from water on to  dry
      land,   the  need    of  a  substance  that  by  its  strong  reducing  properties  would
      diminish  the     aggressivity  of  atmospheric  oxygen  towards  pulmonary  tissue,
      became strongly enhanced, and the ability to produce vitamin C in the kidneys
      did in fact appear in amphibians.
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2Â¥: Originally posted by Éú»¯µÀ³¤ at 2012-03-18 18:49:25:
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      reasons,  some species of birds and mammals have lost this ability, viz.  certain
      bats, the guinea pig,  all the species of monkeys studied thus far, and man.

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