XI. B, 1 Ruediger: Haemolysis by Human Serum 35 



Table I. — The effect of unhealed human serum on sheep corpuscles. 



Serum. 



100 per 

 cent hse- 

 molysis. 



50 to 100 

 per cent 

 haemo- 

 lysis. 



Less than 

 50 per 

 cent 

 haemo- 

 lysis. 



No hae- 

 molysis. 



cc. 

 0.4 

 0.2 

 0.1 

 0.05 



50 

 49 

 45 

 19 







1 



3 



10 





 

 2 

 8 



Per cent. 















26 



Hsemolysis of goat corpuscles. — Table II shows that human 

 serum has fairly good hsemolytic power for the corpuscles of 

 the goat, but not so good as for sheep corpuscles. 



Table II. — The effect of human serum on goat corpuscles. 



Serum. 



100 per 

 cent hae- 

 molysis. 



50 to 100 

 per cent 

 haemo- 

 lysis. 



Less than 

 50 per 

 cent 

 haemo- 

 lysis. 



No hae- 

 molysis. 



cc. 

 0.4 

 0.2 

 0.1 

 0.05 



60 



45 



8 











3 



15 











2 



15 



2 



Per cent. 











24 



96 



Haemolysis of horse corpuscles. — Table III shows that the 

 haemolytic powers of these fifty unheated human sera for the 

 corpuscles of the horse were approximately equal to those for 

 the corpuscles of the goat. 



Table III. — The effect of unheated human serum on horse corpuscles. 



Serum. 



100 per 

 cent 



haemo- 

 lysis. 



50 to 100 

 per cent 

 haemo- 

 lysis. 



Less than 

 50 per 

 cent 

 haemo- 

 lysis. 



No he- 

 molysis. 



ee. 

 0.4 



0.2 



0.1 



0.05 



49 

 44 

 20 



1 







3 



10 



2 





 1 



11 

 6 



Per cent. 

 2 



4 



18 



82 



Haemolysis of rabbit corpuscles. — The haemolytic power of un- 

 heated human serum for rabbit corpuscles was found to be much 

 less than for the corpuscles of the sheep, goat, or horse. 



