1.0 



9 



< 

 > 



o 



>■ 0.7 



00 



< 



00 



O 0.6 



cc 



CL 



0.5 



0.4 



—\ — 

 15 



X 



30 *5 60 75 



WEEKS ON STUDY 



— I — 



90 



105 



120 



1.0 



9- 



< 

 > 



^ 0.8 

 (/I 



0.7- 



0.4 



15 30 45 60 75 



WEEKS ON STUDY 



90 



i 



105 



120 



FIGURE 4. KAPLAN-MEIER SURVIVAL CURVES FOR RATS FED DIETS 

 CONTAINING NITROFURANTOIN FOR TWO YEARS 



Nitrofurantoin, NTP TR 341 



42 



