THEORIES OF IMMUNITY. 



VI. 



GLOSSARY. 



Active immunity: more or less permanent im- 

 munity, the result of the use of gradually 

 increasing doses of the toxines of a bac- 

 terium. 



Addiment : another term, used by Ehrlich, for 

 complement. 



Agglutinin's : substances found in the blood (and 

 possibly elsewhere) during and after the 

 progress of an infectious disease, capable of 

 clumping the bacteria producing the infec- 

 tions; non-specific; not dependent upon a 

 condition of immunity. 



Alexines : substances existing in the serum of 

 both immune and non-immune animals (per- 

 haps of different nature in each) possessing 

 bactericidal properties. May be free in the 

 blood stream, or always, except by accident, 



in the leucocytes. 



no 



