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Article
January 19, 1901

AGGLUTINATION OF THE TUBERCLE BACILLUS BY TUBERCULOUS EXUDATES.

JAMA. 1901;XXXVI(3):189. doi:10.1001/jama.1901.02470030045010
Abstract

As previously noted in these columns considerable work is being done on the value in diagnosis of the agglutination of the tubercle bacillus by the serum of tuberculous patients. Arloing and Courmont have been interested especially in this subject, and Arloing has developed a special method for obtaining homogeneous cultures of the bacillus suitable for the agglutination test. Recently Courmont1 published a summary of his observations during the past two years on the agglutination of the tubercle bacillus by various exudates, tuberculous as well as non-tuberculous. He believes that this method of serum diagnosis may be of great practical importance. The reaction is easily and rapidly obtained in the positive cases. Non-tuberculous exudates do not agglutinate the tubercle bacillus when diluted 1:5, while the majority of tuberculous exudates agglutinate the bacillus in dilutions of from 1:5 to 1:20. Exudates in especially virulent cases of tuberculosis sometimes do not give

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