The three men who won the Nobel Prize in Physiology or Medicine worked to figure out why cells act (and react) as they do.
Sadly, one of the scientists, Ralph Steinman, died just three days ago of pancreatic cancer. His research has been crucial in understanding why the immune system sometimes goes on the attack, even when there are no bateria or dangerous infectious agents present. That, of course, is one of the biggest unknowns with multiple sclerosis and Type 1 diabetes.
Which is precisely why it is so important to keep funding research — we need more breakthroughs so that the origin, and therefore a cure, can be found.