THEORIES OF IMMUNITY. 



Enzymes: non-organized ferments, capable of 

 causing- splitting or decomposition of other 

 substances without entering into combina- 

 tion with them or their products. 



Fermentation : the process in which a body may 

 originate changes in other bodies, whilst 

 remaining unchanged itself. 



Fresh animal : fresh sera, etc. ; not treated in 

 any way to produce any form of immunity. 



Globulins : albuminous bodies, insoluble in 

 water, but soluble in dilute neutral salt 

 solutions ; possibly the active principle of 

 the antitoxines. 



Go-betweens : see Zwisehen-korper. 



Haptines : Ehrlich's name for all the groups of 



receptors. 

 Hafptopliorous (binding) : applied to groups of 



affinities in body and bacterial cells, as well 



as in toxines and immune bodies in general ; 



satisfied by corresponding affinities in other 



bodies; receptors. 



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