Abstract
PREHN has advanced the hypothesis that weakly antigenic tumours can lead to a cell-mediated response which stimulates, rather than inhibits, tumour growth1–3. His hypothesis was based on evidence which indicated that a low level immune reaction might enhance tumour growth. Much of this evidence came from experiments using mouse mammary tumours1,2, although the presence of enhancing or blocking antibodies could explain many of the data4,5. Prehn's demonstration that low doses, but not high doses, of specifically sensitized spleen cells could benefit tumour growth in thymectomized, X-irradiated mice provided the first substantial evidence for the immunostimulation theory3.
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References
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MEDINA, D., HEPPNER, G. Cell-mediated “Immunostimulation” induced by Mammary Tumour Virus-free Balb/c Mammary Tumours. Nature 242, 329–330 (1973). https://doi.org/10.1038/242329a0
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DOI: https://doi.org/10.1038/242329a0
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