This book evolved from a two-day 1993 International Symposium on Radiation and the Gastrointestinal Tract held at the Uniformed Services University of the Health Sciences, Bethesda, Maryland. This area of investigation is particularly important because of growing medical needs and the documented occurrence of accidents involving overexposure of healthy subjects/patients. Some questions have been answered through cellular and animal research-results that lead to hypotheses that have been tested through clinical protocols. In an attempt to answer the unresolved questions, basic scientists and...