National Institutes of Health
National Institutes of Health: Folate
A dietary supplement fact sheet about folate, which is also known as folic acid or vitamin B9. Learn about how this vitamin functions in the human body and how the body reacts when there is a vitamin deficiency or overdose. Providing...
University of Arizona
University of Arizona: B12/folate Problem Set
This site provides an interactive assessment in which you will learn which biological reactions require either B12 or folate (or both), the consequences of a deficiency in either vitamin, and the important step in which B12 and folate...
US National Library of Medicine
Medline Plus: Folic Acid (Folate)
This brief article on folic acid, or folate, is organized into the following sections: "Alternative names," "Definition," "Function," "Food Sources," "Side Effects," and "Recommendation."