When humans have a heart attack, heart muscles die after being cut off from their blood supply. But what if the heart could grow new muscle to replace the dead tissue? Some amphibians can regrow body parts, even entire limbs. But humans and other hig

发表于:2018-12-16 / 阅读(214) / 评论(0) 分类 VOA标准英语2011年(三月)

Google: AI Found Breast Cancer with 99 Percent Accuracy Google says it is deeply involved in developing artificial intelligence, or AI, to help doctors identify and treat disease. The company previously announced successful tests of machine learning

发表于:2019-01-03 / 阅读(68) / 评论(0) 分类 2018年VOA慢速英语(十)月

Can Artificial Intelligence Make Doctors Better? Artificial intelligence (AI) technology may soon be a useful tool for doctors. It may help them better understand and treat diseases like breast cancer in ways that were never before possible. 人工智能

发表于:2019-01-08 / 阅读(40) / 评论(0) 分类 2018年VOA慢速英语(十二)月

Scientists Regrow Tissue Killed During Heart Attack U.S. scientists have done what was once considered science fiction - regrown heart muscle to replace tissue that was killed off in a heart attack. It's the latest advance in the field of regenerativ

发表于:2019-01-14 / 阅读(54) / 评论(0) 分类 VOA标准英语2012年(二月)

Researchers have identified a link between dementia and the brain damage that can occur in older people with high blood pressure and other forms of cardiovascular disease. High blood pressure, high cholesterol, and other conditions that affect blood

发表于:2019-01-14 / 阅读(69) / 评论(0) 分类 VOA标准英语2010年(十一)月

Beating Heart Tissue from Stem Cells In a study in the journal Science, researchers explain how they used mouse embryonic stem cells and microchip technology to create heart muscle tissue that actually beats. Cynthia Graber reports One of the goals o

发表于:2019-01-30 / 阅读(82) / 评论(0) 分类 60秒科学