Daniel and Phyllis Epstein (IMAGE) Keck School of Medicine of USC Caption Alzheimer’s disease has touched the family of Daniel and Phyllis Epstein: Dan’s identical twin brother, David, suffered from Alzheimer’s for 15 years and passed away recently as a result of the disease. Credit Photo/Courtesy of Daniel and Phyllis Epstein and UC San Diego 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.