The human oro-gastrointestinal (GI) tract is a complex system, consisting of oral cavity, pharynx, oesophagus, stomach, small intestine, large intestine, rectum and anus, which all together with the accessory digestive organs constitute the digestive system. The function of the digestive system is to break down dietary constituents into small molecules and then absorb these for subsequent distr...

23.1 Relativistic Electron Beams U.S. Air Force Office of Scientific Research (Grant AFOSR 84-0026) National Science Foundation (Grant ECS 85-14517) U.S. Department of Energy (Contract DE-FGO5-84ER 13272) Lawrence Livermore National Laboratory (Subcontract 6264005) George Bekefi During the past year we have undertaken four studies: 1) nonlinear characteristics of the free electron laser; 2) mea...

The development of ovarian cancer, unlike that of most human tumors, is rarely dependent upon the mutually exclusive loss of RB and p16 cell cycle proteins. RB+/p16+ ovarian cancer cell lines are, however, insensitive to the growth-suppressive effects of ectopically expressed p16 protein, which suggests that they harbor as yet unidentified defects that compromise cell cycle regulation in late G...

Acknowledgements: The authors wish to acknowledge the Spencer Foundation for