Since the 1990s, Yoshinori Ohsumi (yosh-in-OR-ee o-SOO-mee) has been working with baker's yeast to unlock the secret of human cells.
He has been studying a process called autophagy, (AUTO-faj-ee) in which the body's cells destroy and recycle their own components.
Nobel Committee member Maria Massucci (muh-SOO-chee) says Dr Ohsumi's work helps explain what goes wrong in a range of illnesses, from cancer to Parkinson's disease.



