Cancer and the Immune System: The Vital Connection Oki K. Dzivenu, D.Phil., and Jill O’Donnell-Tormey, Ph.D. Copyright © Cancer Research Institute 2003 TABLE OF CONTENTS Introduction An Enigma Called Cancer The Oncogene: A Key Factor in Development of Cancer The Human Defense System The Concept of an Innate Defense Network The Adaptive Defense System Brian Pricked His Thumb and His Immune Sy..