while damage to the gastrointestinal tract is usually designated as the predominant cause of death occurring within 10 days of radiation exposure , it was demonstrated that damage to the hematopoietic/lymphopoietic system can result in animal lethality over the same period as the gastrointestinal syndrome and that this target cell population is more radiation-sensitive than the gastrointestinal epithelium .
C0017189
gastrointestinal tract
C0836205
gastrointestinal epithelium