Methods The gene polymorphism of PS1 and AACT were genotyped in 123 AD cases and 140 controls with PCR methods and RFLP typing.是什么意思_Methods The gene polymorphism of PS1 and AACT were genotyped in 123 AD cases and 140 controls with PCR methods and RFLP typing.在线翻译_英语_读音_用法_例句