BACTERIOLYSINS AND H&MOLYSINS 105 



Other authors, as Pfeiffer and Moxter, as a result 

 of their experiments, are not willing to assume the 

 existence of any relationship between the alexins 

 and the leucocytes. Gruber as well as Schatten- 

 froh are ready to believe the leucocytes to be the 

 source of an alexin, but claim that this is different 

 from that found in serum. Wassermann believes 

 that the leucocytes are a source of complements. 

 Furthermore, the experiments of Ehrlich and Mor- 

 genroth already mentioned, in which the comple- 

 ments disappeared after the destruction of the liver 

 function show that the liver cells are concerned in 

 the formation of complements. 



Isolysins Autolysins Anti-isolysins. All of 

 the preceding studies in haemolysis have concerned 

 themselves with the results obtained by injecting 

 animals of one species with blood cells of another. 

 Ehrlich and Morgenroth now sought to discover 

 what the results would be if they injected an animal 

 with blood cells of its own species ^ They injected 

 goats with goat blood, and found that when the 

 amount injected at one time was large the serum 

 of the goat injected acquired haemolytic properties 

 for the blood of many other goats, but not for all. 

 The substances thus formed the authors called 

 isolysins. These, then, are substances which will 

 dissolve the blood of other individuals of the same 

 species. Substances which dissolve the blood cells 

 of the same individual are called autolysms. But 



