56. Borrelia 



Two types of Borrelia were studied, neither in artificial cul- 

 ture. The one organism, Borrelia noviji, was stained directly from 

 the blood of an infected mouse. The blood was carefully collected 

 into citrated saline solution, the blood cells removed by slow 

 centrifugation, and the spirochetes washed in the usual manner. 

 The other organism studied came from the mouth of a human 

 male with Vincent's angina. This organism may be labeled Bor- 

 relia vincentii (Fig. 63). 



Flagellar Characteristics 



B. noviji was actively motile and flagella stain showed numerous 

 peritrichous flagella of normal curvature. No variants were ob- 

 served. The average wavelength was 1.9 microns. B. vincentii 

 showed numerous flagella with peritrichous arrangement and nor- 

 mal curvature. No distinct variants were observed. The average 

 wavelength of the flagella was 2.0 microns. 



14S 



