BACTERIAL ANAPHYLAXIS 425 



the bacteria used in the process become more resistant to tryptic 

 digestion in consequence. 



This does not necessarily weaken the force of Friedberger's view 

 of infectious disease. For, whatever the source of the toxic sub- 

 stances, the result is still the same. Wherever proteolysis takes 

 place, and certain quantitative relations between cleavage, energy, 

 and substratum exist, it seems toxic bodies may be liberated. 



And the result of such proteolysis, at some stage of the process, 

 yields apparently the same non-specific toxic substance, whatever the 

 particular nature of the proteolysis and whatever the variety of the 

 original protein matrix. 



