Randy Schekman, a professor at the University of California at Berkeley, speaks during an interview at his home in El Cerrito, California October 7, 2013. Americans Schekman and James Rothman and Germany's Thomas Suedhof won the 2013 Nobel medicine prize for their work on how hormones are transported within and outside cells, giving insight into diseases such as diabetes and Alzheimer's. REUTERS/Robert Galbraith (UNITED STATES - Tags: HEADSHOT HEALTH SCIENCE TECHNOLOGY PROFILE)