312 



KAN-ICHIRO MORISHIMA 



(a) 



BACTERIAL SUSPENSION 



Cohen S . 

 Cohen B 

 C-188 B . 



DILUTION OF C-188 SERUM PREVIOUSLY ABSORBED 

 WITH COHEN S 



200 



+ 4-4- 

 4-4-4- 



+4-4- 

 +++ 



800 



+ + + 

 + + + 



1,600 



+ + + 

 + + + 



3,200 



9,600 



+ + ++ + + 

 + + + + + 



28,800 



+ 



SALINE 

 CON- 

 TROL 



Tests with "Cohen" serum 

 Before absorption of serum 



After absorption of "Cohen" serum, diluted to 1:200 at 37°C. for three hours 



(a) 



(b) 



♦ Slight. 



