“Folic Acid” Active Compounds in the Nutrition of the Monkey. ∗

Abstract

Summary

Vitamin B₁₀ and B₁₁ concentrates were inactive as a source of folic acid for the monkey.

Crystalline vitamin B_c and the synthetic Lactobacillus casei factor were active as a source of folic acid for the monkey when fed at a level of 100 γ per day. The B_c conjugate had less activity when fed at levels of 200 and 300 γ per clay.

Folic acid deficiency precipitates a deficiency for the monkey anti-anemia factor which is characterized by lack of growth, sub-optimal hemoglobin levels and a reversal in the lymphocyte-neutrophile ratio.