TABLE C5. SUMMARY OF THE INCIDENCE OF NONNEOPLASTIC LESIONS IN MALE MICE IN THE 

 TWO-YEAR FEED STUDY OF NITROFURANTOIN (Continued) 



Untreated Control 



Low Dose 



High Dose 



ENDOCRINE SYSTEM (Continued) 

 Thyroid gland 



Hyperplasia, cystic 

 Follicle, cyst 

 Follicle, degeneration 

 Follicle, hyperplasia, cystic 



(48) 



1 (2%) 



1 (2%) 



(47) 



1 (2%) 



1 (2%) 



2 (4%) 



(48) 



3 (6%) 



1 (2%) 



2 (4%) 



GENERAL BODY SYSTEM 

 None 



159 



Nitrofurantoin, NTP TR 341 



