Ключевые слова: acid, anemia, antifolate, atom, atomic, b9, bifida, carbon, cardiovascular, chemistry, compound, deficiency, dietary, dihydrofolic, disease, dna, drug, folacin, folate, folic, folic acid, folinic, formula, glutamate, glutamic, homocysteine, hydrogen, hypervitaminosis, illustration, methotrexate, model, molecular, molecule, neural, nutrient, organic chemistry, organic compound, pregnancy, pregnant, science, spina, structure, supplement, supplementation, tetrahydrofolate, valproic, vitamin, vitamin b9,