Inflammatory bowel disease (IBD) involves inflammation of the intestines and is a chronic (long-lasting) illness. The two major types of IBD are ulcerative colitis and Crohn's disease. Ulcerative colitis affects the lining of the large intestine (colon) and/or the rectum.
Definition of comb binding. : mechanical binding (as of pamphlets) in which split rings of plastic or metal are passed through slots at the gutter margin.
An optical frequency comb is a very precise tool for measuring different colorsâor frequenciesâof light. The technology, made possible by recent advances in ultrafast lasers, can accurately measure much higher frequencies than any other tool.