The specificity of the blood-tuberculin test for mycobacterium tuberculosis human infections: a new test for tuberculosis

A blood tuberculin test is described based on the hypothesis that a high degree of tuberculin hypersensitiveness could be widespread even to the nucleated cellular elements of the blood. The reactions produced by the challenging drop of PPD tuberculin inside the hypersensitive cells have been fairly demonstrated. The test appears to be specific for human mycobacterium tuberculosis. The Editors of the Journal hope to stimulate, through publication of this article, similar studies by other investigators in this field