“…The lowest dose used in these experiments is comparable with those which man might receive if he ate some of the foods which are known to contain high concentrations of nitrosamines (Egan & Hubbard, 1975;Scanlan, 1975). One must be cautious in extrapolating these results to man because, among other things, it is not known whether the gastrointestinal tract of man can metabolize dimethylnitrosamine; however, if the factors controlling absorption and metabolism are similar in man and rat, these experiments would have some interesting implications.…”