Low dose stimulation produces immunity to cancer

[Muckerheide <muckerheide@attbi.com>]

Friends,



J. B. Murphy (Proceedings of the National Academy of Sciences), studying

cancer immunity and the role of lymphocytes, reports that both natural and

induced immunity controls and destroys cancers in mice (specific cancers in

a specific strain), and that lymphocytes target and destroy those tumors. He

shows this by using the property of small doses of x-rays to suppress

lymphocytes. As lymphocytes are suppressed, the tumors are increasingly able

to become established and to grow rapidly.



But, he reports that their finding that at even lower doses the lymphocytes

are NOT suppressed, but stimulated!



With this dose the resistance in the mice to replanting spontaneous tumors

increased from 3.4% to 50%!



In addition, following ła stimulating dose of x-rays,˛ by injecting the mice

and unexposed controls a week later (multiple experiments) resulted in an

average of 75.1% tumors in controls and 27.5% exposed mice.



PNAS, 1920, Vol 6, 35-38



(As has been provided from other sources, the stimulating effect of low dose

radiation on immunity is even more dramatic!)



The paper is at:

http://cnts.wpi.edu:9000/rsh/dd3/_database.jsp



Under biological studies, "3.2.1.1.1 Mice"



The papers are chronological, so it's at 1920 at the end.



Regards, Jim Muckerheide

Radiation, Science, and Health



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