The discovery of the tubercle bacillus by Koch and the incontestable proof furnished by experimental inoculation that it was the cause of pulmonary tuberculosis, has acted as a powerful incentive to the study of disease from a bacteriological standpoint of view, and, leading to the study anew of many affections hitherto considered as of unknown origin or doubtful nature, has allowed many of them to be established upon a firm basis. One of the most important results of this method of study has been the discovery that affections, previously considered separate and distinct one from the other, were in reality only clinical manifestations of the same disease; that is, they were due to the same cause—a fact which was most brilliantly seen in tuberculosis as it occurs in the skin. In this organ of the body, the most varying clinical phenomena have been found to be dependent upon the presence
ELLIOT GT. TUBERCULOSIS CUTIS VERRUCOSA. Read in the Section on Dermatology, at the Thirty-Ninth Annual Meeting of the American Medical Association, May, 1888. JAMA. 1889;XII(2):37–40. doi:10.1001/jama.1889.02400790001001
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