一项令人惊讶的发现表明,阿尔茨海默病的一些早期症状可能始于大脑之外。利用由人体细胞制成的微型实验室系统,科学家们发现基因突变与A surprising discovery suggests that some early signs of Alzheimer’s disease may begin outside the brain. Using miniature laboratory systems made from human cells, scientists found that genetic mutations associated with