in another experiment , e. coli infection augmented bladder carcinogenesis by n-nitrosobutyl ( 4-hydroxybutyl ) amine ( nbhba ) , as indicated by earlier appearance of bladder tumours ( six weeks compared to nine weeks ) and , after 25 weeks , higher incidences of transitional-cell carcinomas ( 41/46 compared to 39/53 , p less than 0.05 ) , squamous metaplasia ( 43 % compared to 9 % , p less than 0.0001 ) , glandular metaplasia ( 26 % compared to 13 % , p less than 0.05 ) and muscle invasion ( 30 % compared to 11 % , p less than 0.01 ) in the e. coli-infected group receiving carcinogen compared to the noninfected group receiving carcinogen , respectively .
C0005682
bladder
C0005695
of bladder tumours