Walking quickly through an underground tunnel that stretches nearly a half mile, I carried samples frozen on dry ice between two buildings on the Mayo Clinic campus to be tested as part of a clinical study on irritable bowel syndrome, or IBS. Analysis of the tissues may help physician-scientists understand the causes of IBS and one day find a cure. In other places, it could take hours or days for analysis to begin, but here at the Mayo Clinic, I was impressed by how almost instantaneous everything is. » More ...