Zeitschrift fur Krebsforschung und klinische Onkologie. Cancer research and clinical oncology · 1977
Experimental induction of melanotic tumors in syrian golden hamsters by transplacental and topical application of ethylnitrosourea.
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Pelfrene A F, Love L A
Аннотация
Pregnant Syrian golden hamsters were treated with a single intra-peritoneal injection of ethylnitrosourea (ENU) solution a few hours pre-parturition. Offspring either received no further treatment or from 6 weeks of age, bi-weekly application of ENU solution in acetone for 20 consecutive weeks. Progeny from non, transplacentally treated mothers were also treated topically. Among all treated groups, 8.6% of the animals developed pigmented skin tumors, most of these animals having received the combined treatment. This group also showed a significantly decreased latency period in females compared to males. One of the skin tumors, which was histologically and clinically benign, was transplanted several times and subsequently exhibited malignant features.