Fig. 4.

Non-mammary lesions found in C3(1)/Tag founder rats. a pituitary adenoma (arrowheads) compressing adjacent neuropil. b Islet cell carcinoma infiltrating normal adjacent exocrine pancreatic parenchyma (arrowheads). c Thyroid follicular carcinoma (arrowheads) infiltrating adjacent tracheal submucosal tissues and surrounding tracheal rings. d Parotid salivary gland carcinoma. e Parotid salivary gland atypical hyperplasia (arrowheads) and f Harderian gland atypical hyperplasia (arrowheads). a, b, c, d: Bar = 100 μm, e, f: Bar = 50 μm