SE ^ä sg^ ^ ^ 



;S-' ^ si 



Fig. 1. Comparison of behaviour of bovine-serum albumin (BSA) and inhibitor (I) 

 on diffusion into antiserum in agar gel by the method of Ochterlony (1953). Concen- 

 trations, 5 0-5 and 005 mg./ml. with both reagents. Centre cup contains rabbit 

 anti-bovine serum albumin. Photograph was taken after the plate had been standing 



for 5 days at 2°. 



