A differential microdetermination for the various forms of biopterin.
D000818:Animals; D001708:Biopterins / Q000031:analogs & derivatives / Q000032:analysis*; D003421:Crithidia / Q000254:growth & development; D006801:Humans; D006863:Hydrogen-Ion Concentration; D008722:Methods; D051379:Mice; D008832:Microchemistry; D010084:Oxidation-Reduction; D011621:Pteridines / Q000032:analysis*
D011621:Pteridines; D001708:Biopterins