folic acid or vitamin b9 chemical formula on a blue medical background with molecules for article, banner or

acid antifolate atomic atoms background bifida card chemical chemistry composition compound deficiency dihydrofolic drawing flat folacin folate folic folinic formula fortified glutamic healthy homocysteine hypervitaminosis icon information leaf leafy medical medicare medicine message methotrexate molecular molecule pregnancy protection skeletal spina structure text vegetable vitamin vitamine