eb075861_Information_on_eMedicineHealth_Water_soluble_vitamins_Function
[Nutrient] Folic acid [Sources] Leafy green vegetables and legumes, seeds, orange juice, and liver; now added to most refined grains [Function] 
Part of an enzyme needed for making DNA and new cells, especially red blood cells
Vitamins: Their Functions and Sources: Healthwise Medical Information on eMedicineHealth