these results show that immunosuppression does not occur in rats administered phenacetin for up to 15 weeks , nor in fanft-induced bladder carcinogenesis at the time of reversible bladder mucosal hyperplasia ( 6 weeks ) , or when the mucosal lesions have become irreversible , non-invasive carcinomas ( 10 and 15 weeks ) .
C0005682
bladder
C0227691
of