May 19, 1928


JAMA. 1928;90(20):1644. doi:10.1001/jama.1928.02690470050025

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April 14, 1928.

A Procedure for the Early Diagnosis of Cancer  For some time past, various communications have been published on the discovery of a diagnostic procedure that is said to permit the recognition of cancer in its earliest stages by means of the application of a special staining method to the blood. As it would be of the greatest importance for the recognition and combating of cancer to possess such a method for early diagnosis, the "Ringold procedure" was immediately subjected to verification by Dr. E. Haagen in the cell research laboratory of the bacteriologie department of the Reichsgesundheitsamt (federal bureau of health) in Berlin-Dahlem. According to statements by the discoverer of the method, it is possible, by means of the procedure, to determine, within a few minutes, from a blood smear taken from the earlobe of the examinee and treated with a special staining and differentiating fluid, whether

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