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February 19, 1910


Author Affiliations


JAMA. 1910;LIV(8):593-595. doi:10.1001/jama.1910.92550340001001c

During the past few years Dr. R. C. Rosenberger, of Philadelphia, has made a series of contributions, first, with reference to the reliability of the various methods of staining the tubercle bacillus and other acid-proof bacilli and their resistance to decolorizing agents; second, with reference to the frequency with which tubercle bacilli occur in the feces of tuberculous patients; and, third, with reference to the presence of tubercle bacilli in the blood of persons afflicted with tuberculosis. The logical outcome of these studies, which we know from personal observation were conducted with great pains, patience and perseverance, was a new theory of tuberculosis constructed on the successive steps embraced by the researches. Thus Rosenberger first came to the conclusion that for all cases in which differential staining was to be performed the Pappenheim reagent was indispensable; with the aid of this reagent he was able to satisfy himself that

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