ANTIBODY FORMATION 



100 



o 



UJ 



z 

 < 



>■ 

 a 

 o 

 ffl 





2 - 



to.5 = 4.7 DAYS 

 to.5-3.8 DAYS 



O = THYROIDECTOMIZED 



• = CONTROLS 



A •= THYROXIN-TREATED 



4 6 8 10 



TIME (DAYS) 



12 



Figure 2. Passive antibody decay in surgically thyroidectomized, thyroxin-treated 

 and untreated control rabbits. 



93 



