[The relationship between immunological defence and the development of tumours]

Abstract

Several of the main features of the relationship between immunological defence and the development of tumours are briefly examined: immunological tolerance, autoimmunisation and the development of reticulum-cell sarcomas in certain mouse strains, and the existence of relationships between pathological proliferation and immunological status abnormalities. The arguments in favour of the existence of immunological tolerance and the meaning of other phenomena relating to immunological status and tumours are briefly discussed.