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- W4872007 abstract "Syrian golden hamsters were treated weekly with 10 mg/kg body weight N-nitrosobis (2-oxopropyl) amine for life (Group 1) or 6 weeks and were sacrificed at biweekly intervals from 2 weeks (Group 1) and 8 weeks (Group 2) after initiation of the experiment. The pancreas was examined in step sections, and the sequential alterations noted for each interval were recorded. Lesions were found in intrapancreatic and extrapancreatic ducts. Equivalent alterations consisting of hyperplasia, metaplasia, atypia, and lesions characteristic of carcinoma in situ developed ubiquitously and simultaneously in pancreatic ducts of different sizes and in ductules, but not in acinar cells. Among the most significant findings were intrainsular ductular formations, their proliferation, and sequential malignant alteration comparable to the involved preexisting ductules. Differences between the two experimental groups were of a quantitative rather than qualitative nature. The incidence and multiplicity of neoplastic lesions at each interval according to group, sex, and anatomic locations of adenocarcinomas are outlined. Predilected areas for some lesions were found. Results indicate a common origin of all induced tumors from a pluripotent cell populating the pancreatic ductal system." @default.
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- W4872007 date "1977-08-01" @default.
- W4872007 modified "2023-09-23" @default.
- W4872007 title "Early lesions of pancreatic ductal carcinoma in the hamster model." @default.
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