BACTERIOLYSINS AND HMMOLYSINS 



95 



phore group must have remained intact. Ehrlich 

 therefore concludes that the complements consist 

 of a combining haptophore group which withstands 

 heating to 55 C., and another, more fragile group, 

 which possesses the actual solvent properties and 

 which Ehrlich calls the zymotoxic group. The 

 complements, according to this conception, are 

 entirely analogous to the toxins already studied. 



zymotoxic group 

 COMPLEMENT 

 haptophore group 



IMMUNE BODY 



FIG. 9. 



And just as those toxins which had lost their 

 toxophore group were called toxoids, so Ehrlich 

 terms complements which have lost their zymo- 

 toxic group, complementoids . 



Bordet, it will be recalled, does not believe in 

 any complementophile group in the amboceptor. 

 So also in the case of the complement, or alexin 

 as he prefers to call it, he refuses to accept Ehrlich 's 

 view that this contains a zymotoxic and a hapto- 



