Methods The gene polymorphism of PS1 and AACT were genotyped in 123 AD cases and 140 controls with PCR methods and RFLP typing.

• 方法应用PCR-RFLP方法，在123例患者和140例正常人中观察AACT信号肽和PS1基因多态性的分布，进行关联分析。结果1.