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The occurrence of folic acid (pteroyl-L-monoglutamic acid) in human blood serum after small oral doses
  1. R. J. Leeming,
  2. Heather Portman-Graham,
  3. J. A. Blair
  1. General Hospital, Birmingham
  2. Department of Chemistry, University of Aston in Birmingham


    Human serum folates analysed by bioautography after oral doses of 0·5 mg folic acid (pteroyl-L-monoglutamic acid) show folic acid to be present.

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    • Requests for reprints should be addressed to R. J. Leeming, The General Hospital, Birmingham, B4 6NH.