Milne, D B Microbiological and radioimmunological assays for folic acid in whole blood compared: effect of zinc nutriture. [electronic resource] - Clinical chemistry Dec 1983 - 2117-8 p. digital Publication Type: Comparative Study; Letter ISSN: 0009-9147 Subjects--Topical Terms: AdultDietFalse Negative ReactionsFolic Acid--bloodHumansMaleRadioimmunoassayZinc--administration & dosage