The 'Big Bang' of Alzheimer's (VIDEO) UT Southwestern Medical Center This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Scientists at UT Southwestern Medical Center have discovered the "Big Bang" of Alzheimer's disease - the precise point at which a healthy protein becomes toxic but has not yet formed deadly tangles in the brain. Credit UT Southwestern Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.