222 BACTERIA 



lesion resembles a tubercle, as it consists of giant cells, epithelial, 

 and round cells. 



Immunity. There is very little accurate knowledge as to 

 immunity against this organism; of late bacterins have been tried 

 with some success it is claimed. 



STREPTOTHRIX (Eppinger) OR NOCAKDIA 



The genus of truly branching mycelium-forming higher bacteria 

 (see page 3), such as the actinomyces, belonging to the group 

 between bacteria proper and the moulds, called Trichomycetes. 

 Kruse has described nineteen different members of the strepto- 

 thrix, some pathogenic to man and animals. 



FIG. 67. Streptothrix Candida. (Kolle and Wassermann.) 



A number of cases of streptothrix (Streptothrix Hominis) infec- 

 tion in man have been reported. The disease, in general, resem- 

 bles phthisis. In the pus, sputum, and stained sections of these 

 cases, strep to thricial threads have been found (Figs. 67 and 70). 



Morphology and Stains. Threads are thick and short, or long 

 and slender, depending upon the medium on which they grow. In 

 bouillon the threads are thin and long, on blood serum, short and 



