Abstract
The carcinogenic effects of dimethylnitrosamine (DMN) and nitrosomethylurea (NMU) injected subcutaneously at 3 different dose levels in European hamsters were studied. DMN induced malignant haemangioendotheliomata of the liver and kidney, hepatocellular carcinomata and, in one animal, a cholangiocellular carcinoma. The effect of NMU was localized at the site of administration and resulted in subcutaneous fibrosarcomata, carcinosarcomata or epidermal carcinomata.
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