VOA慢速英语:血液检查确诊阿尔茨海默症取得早期进展

factor – n. something that helps produce or influence a result

diagnose – v. to recognize signs of something

occur – v. to take place; to come into existence

positive – adj. good or useful

diagnostic – adj. of or relating to the identification of a disease or problem

accuracy – n. freedom from mistake

cerebrospinal – adj. involving the brain and spinal cord