Comparative studies of neoplastic response to a single dose of nitroso compounds. 6. The effect of diethylnitrosamine in Syrian golden hamsters.

The effect of a single subcutaneous injection of different DEN doses was examined in adult Syrian hamsters observed for life. The minimal effective dose (threshold dose) for neoplastic response, reflected by induction of papillary polyps in the larynx and/or trachea, was 1.03 mg DEN/kg body weight. No tumors were found which could be related to treatment in other segments of the respiratory epithelium nor in other tissues.