In the study , the researchers followed 477 ashkenazi centenarians who were 95 or older and living independently .
研究过程中,研究人员跟踪调查了477名95岁及以上岁数的独立生活的老人。
Therefore , biochemical assays using enzyme levels rather than dna mutation analysis are the tests of choice for initial tay-sachs screening in all population groups , especially in those not of ashkenazi jewish descent .
Consult a genetic counselor if you are concerned about your family history , and inquire about being tested for the genetic mutations that increase breast cancer risk ( more common among ashkenazi jews ) .
While we and others are working hard to eliminate tay-sachs disease in the ashkenazi jewish population and beyond , tay-sachs testing is not perfect and a residual risk to be a carrier exists , albeit in a very small percentage of patients .
General dagan says that gabi ashkenazi , who headed the armed forces , and yuval diskin , who until last month ran the internal-intelligence service , the shin bet , both agree with him .
University of warwick psychology researcher thomas hills and ralph hertwig of the university of basel looked at a range of studies , including research into the use of drugs like ritalan which help with attention , studies of people with autism as well as a study of the ashkenazi jewish population .