645 



IV. 



Intravenous injection Vi c.c.ni. per k.g. slieepbloocl. 

 A nonsensitized. 

 B sensitized with 4 unities 

 . 20 , 



C 

 A 



rabbit 



dogserum, so heterogeneous serum 

 Strength: Vi,„. 



Before the injection 



(The trialserums after 3 days after 5 days after 7 days after 10 days 

 were not heated) 



Summary : The rabbits treated here had only a small quantity of 

 normalamboceptors. 



The C rabbits distinctly become immune more slowly than the A 

 and B rabbits ; the latter remain on the same level the first few 

 days ; finally the A rabbits carr}' the victory as to litre. 



The use of dogserum for sensitizing does not seem to be of any 

 influence here. 



V. 



Intravenous injection of sheepblood. 1 ccm. each rabbit. (The rabbits had about 

 the same weights, 2 — 3 kg.) Each group = 2 rabbits. 

 A nonsensitized. 

 B V12 dyses 



c V. 



D 8 

 E 24 

 F 50 

 G 100 

 H 150 



rabbit serum : strength V2000 

 entirely absorb 150 doses. 



The red cells could 



