STREPTOTHRIX 2O$ 



medium. Upon Agar. It forms shiny round colonies, that are first 

 devoid of color, then become deep red. They resemble an umbili- 

 cated vaccine vesicle and adhere tightly to the agar. In Milk. It 

 grows without coagulating the medium. On Potato. The culture 

 is very slow, and without chromogenesis. Old colonies are powdery, 

 due to spores. 



FIG. 72. Strep tothrix hominis. (Kolle and Wassermann.) 



Pathogenesis. In man it produces madura foot, an affection 

 characterized by induration, ulceration, and fistulae formation with 

 pus. 



STREPTOTHRIX (Eppmger). 



The genus of truly branching mycelium- forming higher bacteria 

 (see page 3). The same genus includes the actinomyces. Kruse 

 has described nineteen different members of the streptothrix, some 

 pathogenic to man and animals. 



Lately a number of cases of streptothrix (Streptothrix Hominis) 

 infection in man have been reported. The disease, in general, 

 resembles phthisis. In the pus, sputum, and stained sections -of 

 these cases, strep to thricial threads have been found. (Fig. 72.) 



