1·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。