연구하는 인생/西醫學 Medicine 190

Cancer and the Immune System: Adaptive Defense System

Cancer and the Immune System: Adaptive Defense System The Adaptive Defense System In her infinite wisdom, Mother Nature evolved far more sophisticated and specific responses to pathogenic invasions eons before humans developed complex military systems. The specific immune response involves a repertoire of specialized cells, chemicals, and hormones that work in a highly coordinated fashion to rid..

Cancer and the Immune System: Concept of an Innate Defense Network

Cancer and the Immune System: Concept of an Innate Defense Network 2.1 The Concept of an Innate Defense Network The innate immune system evolved to protect host organisms about 900 million years ago. It consists of mechanical, chemical, microbiological, and cellular defense networks. The function of the innate immune defense system is akin to “turning back the barbarians at the gates.” We ca..

Cancer and the Immune System: The Human Immune Defense System

Cancer and the Immune System: The Human Immune Defense System THE HUMAN IMMUNE DEFENSE SYSTEM The environment in which we live contains a wide range of organisms called pathogens that view the human body as a rather juicy target to invade and live off till death do us apart. The job of the mammalian immune system is to defend the body against these pathogens, which include bacteria, viruses, fun..

Cancer and the Immune System: The Oncogene: A Key Factor

Cancer and the Immune System: The Oncogene: A Key Factor in the Development of Cancer 1.2 The progress of cancer within the body Every cancer starts with a single cell that has been unleashed from the growth restraints placed on all normal cells. Because the changes that took place within the cancer cell were directed by the cell’s DNA (the molecular basis of heredity), they are passed on to e..

Cancer and the Immune System: Enigma Called Cancer

Cancer and the Immune System: Enigma Called Cancer AN ENIGMA CALLED CANCER The word “cancer” is an umbrella term that refers to about 200 diseases that share two common characteristics: first, an uncontrolled growth of cells and second, the ability to invade and damage normal tissues either locally or at distant sites in the body. Since a cell is our body’s basic unit of life, this disease..