THEORIES OF IMMUNITY. 



Alexines : (Bordet) bodies recognized by Bordet 

 as existing* in the cells and possessed of bac- 

 tericidal properties; because of the fact 

 that they may be destroyed by heat (55° 

 C), and thus resembling Buchner's bodies of 

 the same name, Bordet called them alexines; 

 probably the same as the complement of 

 others. 



Amboceptors: receptors of the third group, 

 capable of becoming normal factors in meta- 

 bolism; (Zwischen-korper, go-betweens;) 

 immune bodies. 



Anti-complement : a substance produced in the 

 blood of an animal, injected with serum 

 containing only complement (no immune 

 body) ; it acts against the complement, and 

 prevents the latter from acting with the 

 immune body. 



Anti-immune body: a substance that may be 

 supposed to exist in the blood of an animal 

 treated with immune serum in which only 

 " immune body ' exists — the complement 

 having been destroyed. 



Anti-infectious: term used by Metchnikoff to 



111 



