The Associated Press
Americans James E. Rothman, professor of biomedical sciences at Yale University; Randy W. Schekman, professor of cell and developmental biology at the University of California, Berkeley; and German-born Thomas C. Suedhof, professor in the School of Medicine at Stanford University.
For their discoveries of how hormones, enzymes and other key materials are transported within cells, a process known as "vesicle traffic."
The discovery solves the mystery of how animal cells organize their internal transportation system to direct molecules to the correct place.
This helps explain how certain illnesses, including diabetes, tetanus and many immune diseases, work.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.