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Article
December 10, 1910

Foreign Matter vs. the Treponema in Ink Methods

JAMA. 1910;55(24):2080. doi:10.1001/jama.1910.04330240058022

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Abstract

To the Editor:—  In The Journal (Nov. 26, 1910, p. 1892), Dr. J. H. Barach gives an interesting criticism of the American India inks with special reference to foreign matter which may be present. His observations are good, especially as regards the "dried" preparations. I desire to add that these inks are not usually sterile, but often contain many microorganisms. Some of these methods, however, especially those in which the "wet" technic has been adopted, have been serving, exceedingly well, men who have found an office diagnosis necessary in many suspected cases of lues (Arch. Diagnosis, January, 1910). Can it be possible that this one communication must drive us back to the more tedious methods? Has any person claimed that these inks are free from extraneous material and their use without objection?It may be well to note the following points:1. No motions or other indications of life

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