Addition of bisulfite to folate and dihydrofolate.
D055598:Chemical Phenomena; D011232:Chemical Precipitation; D002621:Chemistry; D005492:Folic Acid; D006863:Hydrogen-Ion Concentration; D008956:Models, Chemical; D010084:Oxidation-Reduction; D011621:Pteridines; D013053:Spectrophotometry; D013447:Sulfites; D013762:Tetrahydrofolate Dehydrogenase
D011621:Pteridines; D013447:Sulfites; D005492:Folic Acid; D013762:Tetrahydrofolate Dehydrogenase