The study found that 31 of 43 patients with the precancerous laryngeal lesion called leucoplakia demonstrated 50 percent or greater reduction in the lesion size after six months of taking folate supplements 这个项目发现在43个存在喉部癌前病变组织的的对象中有31人在服用叶酸制剂半年之后肿瘤组织形状减小了一半或者更多。
