the n-nitrosamines n-nitrosodimethylamine ( dmn ) , n'-nitrosonornicotine ( nnn ) and 4- ( n-methyl-n-nitrosamino ) -1- ( 3-pyridyl ) -1-butanone ( nnk ) were injected intraperitoneally 24 h before sacrifice in f344 rats and c57bl mice in doses of 297 mumoles/kg b.w . and 148 mumoles/kg b.w. , respectively .
C0028197
nitrosamines
C0012431
dmn