www.pteridines.org
Pteridines, Journal of ISP
www.i-med.ac.at
Innsbruck Medical University
www.i-med.ac.at/imcbc/molecularcellbiologyfolder/molcellbiol.html
Division of Biological Chemistry, Innsbruck Medical
University
www.physiological-chemistry.at/IMCPL/Forschung/pteridine.php
Institute of Physiological Chemistry, Medical University
of Graz
www.bh4.org
BH4 - Tetrahydrobiopterin Homepage
www.researchpterins.com
Research Pterins Shop
www.schircks.com
Schircks Laboratories, Home of Pteridines
www.ncbi.nlm.nih.gov
PubMed, National Library of Medicine
www.brahms.de
BRAHMS Company, Hennigsdorf/Berlin, Germany, Neopterin
Immunoassay Supplier
www.ibl-hamburg.com
Immunobiological Laboratories, Hamburg, Germany, Neopterin
Immunoassay Supplier
www.concile.de
Concile GmbH,
Freiburg, Germany, Neopterin Immunoassay Supplier