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Carcinogenicity of nitrosamines and methanesulphonate esters given intraperitoneally, in RF mice

✍ Scribed by N. K. Clapp


Book ID
102276196
Publisher
John Wiley and Sons
Year
1973
Tongue
French
Weight
383 KB
Volume
12
Category
Article
ISSN
0020-7136

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✦ Synopsis


Abstract

Single injections of dimethylnitrosamine (DMN), diethylnitrosamine (DEN), methyl methanesulfonate (MMS), and ethyl methanesulphonate (EMS) were given intraperitoneally to male RF mice at various doses. DEN induced lung adenomas, liver hepatomas and forestomach tumors (squamous‐cell carcinomas and papillomas) at all doses, and Leydig‐cell tumors of the testis at the highest dose given. DMN, while increasing lung tumor incidence, failed to induce liver tumors when given intraperitoneally β€”in contrast to high incidences obtained by oral administration. The reason for this difference is not obvious at this time. MMS and EMS were not carcinogenic as used in this study. None of these alkylating agents was leukemogenic.


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