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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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2Â¥: Originally posted by Éú»¯µÀ³¤ at 2012-03-18 18:49:25:
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ÔÙÎÊÒ»¸ö£ºHowever, for as yet unexplained
      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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