During recent years a large amount of investigative work of the highest order has been devoted to problems connected with the etiology of malignant tumors, but the positive results apparently have been so meager that the general impression seems to be to the effect that little or no actual progress has been made. This disappointment, to a large degree, depends on the fact that our expectations were set too high, we were looking for the immediate solution of the great and fundamental question, namely, what is the cause of cancer? Gradually it has become clear that this question probably is not susceptible of immediate solution with our present methods of investigation, and more attention is now being given by the cancer institutes, cancer committees and individual investigators to the collection of masses of facts of various nature in order better to secure a broad basis for conclusions and indications as
EXPERIMENTAL CANCER AND IMMUNITY. JAMA. 1906;XLVII(3):206–207. doi:10.1001/jama.1906.02520030048004
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