Hi 



Immunity 



or should they possess toxic properties the cells may be poisoned. 

 It is doubtless thus that death frequently occurs through the destruc- 

 tion of cells essential to somatic life in the infectious diseases. 

 Butif thenumber of receptors appropriated by the abnormal hapto- 





tjoi^vriunutuit ui pasn //9') 



phores is not sufficient to destroy the cell, it reacts under the stimulus 

 of necessity, and according to the theory of Weigert, provides itself 

 against the present impediment and future menace to its activities 

 by regenerating new receptors to take the place of these thrown out 

 of use, and by regenerating them in excess of the usual numbers. 



