The Hemolytic Amboceptor 



291 



Test 

 Tube containing the serum to be tested. 



Control 

 Control of serum to be tested to deter- 

 mine substances which without antigen 

 may inhibit hemolysis. 



I Control 



Control of the test by the use of a 

 known syphilitic serum. 



control 



Control of the known positive to deter- 

 mine that it contains no recently 

 developed substances that may inhibit 

 hemolysis. 



^ o 



CONTRO^ 



Control of the test by the use of a 

 known normal serum. 







Control 

 Control of the known normal serum to 

 determine that no substances inhibiting 

 hemolysis had developed in it. 



o "^ 



O P 



re 3 



» O c% 



Control 

 Control test to determine changes in 

 the antigen by which hemolysis might be 

 prevented. 



Control 

 Control of the hemolytic system. 



0. 3 



Control 

 Control for the purpose of determining 

 the presence of anti-sheep amboceptors 

 in the serum to be tested. 



