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Pathological observation of rat pancreatic lesions induced by DMBA. Hematoxylin-eosin stain, original magnification × 200. (A) Poorly-differentiated ductal adenocarcinoma (group A); (B) Well-differentiated ductal adenocarcinoma (group B); (C) Fibrosarcoma (group B); (D) Severe atypical hyperplasia in ductal epithelia (group A).
