No one worries about the growth of cancer cells in culture systems or in test tubes. Only when they grow in the living—human—organism is there cause for alarm. Culture systems are valuable for studying the basic mechanisms of oncogenesis, but it is the response of the whole individual to his disease that is of prime importance because this interaction between host and disease determines the patient’s prognosis. Many investigators think that the immune system is a major component of an individual’s response to cancer. They are now seeking the answers to two questions of fundamental importance: What is the role played by the immune system in the initiation and growth of tumors? And, how may the immune system be manipulated to cure or control cancers in humans?
KeywordsTumor Antigen Immune Surveillance Blocking Activity Culture Tumor Cell Cancer Etiology
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