452 



THE BACTERIOPHAGE AND ITS BEHAVIOR 



as possible. In each case an agar tube was inoculated with a colony- 

 taken from the primary culture, and each time that a fresh culture was 

 needed for the preparation of suspensions against which the filtrates 

 containing the bacteriophage from the patient were to be tested, it was 



Chart 6. 



Marie Mo (55 years) Clinically, Typhoid Fever 



B. typhosus 



B. coli 



B. paratyphosus A-- 



B. paratyphosus B 



Virulence for 



B. dysenteriae Shiga- 



always taken from this tube. In this way, the bacteriophage through- 

 out the course of the disease was tested against a culture as nearly 

 constant as possible, uniform especially from the point of view of the 

 resistance of the bacterium. 



