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1·It was clinically testified that supplement of folacin for neural tube defect prevention is efficient for women of childbearing ages.

大多数育龄妇女增补叶酸被临床证明是预防胎儿神经管缺陷行之有效的方法。

2·Method: Chromosome fragile sites and breakpoint expression by reducing folacin in TC199 medium were determined in 80 autistic children and 80 normal children.

方法：采用低叶酸tc 199培养诱导法，对80名孤独症儿童和80名正常儿童进行了外周血淋巴细胞染色体脆性位点表达检测和断裂点频率统计。

3·Preparation of pod solution: cutting stem and lid of108different concentrated folacin acid into pieces and mixed from9cans of each group with12groups in total.

对12组每组9瓶共108瓶经不同浓度叶酸处理银针菇的菌盖、菌柄剪碎混匀后，从每份样品中称取0。