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Abstract

It is now nine years since the subject was last reviewed by Purrmann in this series (138). In the meantime the chemistry of the pteridines has undergone dramatic development. The constitutions of more than a dozen naturally-occurring pteridines are now known, as against three in 1945 (xanthopterin, isoxanthopterin and leucopterin). Parallel with this development, a more serious biological role has been revealed for the pteridines. From being thought of principally as insect pigments, they are now seen to be important regulators of cell-division, even in the highest forms of life (80).

Keywords

Folic Acid Folinic Acid Folic Acid Series Lactobacillus Casei Ultraviolet Spectrum 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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© Wien · Springer - Verlag 1954

Authors and Affiliations

  • Adrien Albert
    • 1
  1. 1.CanberraAustralia

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