ANTAGONISM. SUMMATION. AND SYNERGISM 



509 



CI.) 



Fig. 10-7. I.sobologram for two .simultaneously acting inhibitors demonstrating 

 summation (Eq. 10-28). 



a,) 



(12J- 



FiG. 10-8. Isobologram for two simultaneously 

 acting inhibitors illustrating the curves to be ex- 

 pected for sujnmation, synergism, and antagonism. 



