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Recently we commented on the report on the statistical investigations of cancer of the Imperial Cancer Research Fund of Great Britain. There has appeared since Part II of the same report, dealing with the growth of cancer under natural and experimental conditions. This report is of great importance, particularly because of the emphasis it places on the significance of experimental researches on malignant growths. It gives an extensive account of the excellent work done by Drs. Bashford, Murray and Cramer on transplantation of cancer in various animals and summarizes and criticizes, in the light of experimental facts, the various hypotheses concerning the nature and origin of these growths.
It is significant that of all the various animals inoculated with tumors from the same species success was obtained only with the mouse. In 8,000 transplantations in mice, success varied from 1.5 to 50 per cent. In over 900 inoculations made with
EXPERIMENTAL RESEARCHES ON CANCER. JAMA. 1905;XLV(14):1004–1005. doi:10.1001/jama.1905.02510140052004
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