resistance to the cytocidal effect of aflatoxin b1 , 2-acetylaminofluorene , n-hydroxy-2-acetylaminofluorene , methotrexate , or methyl methanesulfonate shows a progressive increase until 48 hr and then returns to the resting level of susceptibility by 2 weeks .
C0000248
2-acetylaminofluorene
C0020319
n-hydroxy-2-acetylaminofluorene