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. Author manuscript; available in PMC: 2014 Dec 6.
Published in final edited form as: Toxicology. 2013 Sep 10;314(1):10.1016/j.tox.2013.09.002. doi: 10.1016/j.tox.2013.09.002

Figure 4. Respiratory/transitional adenoma, solid and cystic.

Figure 4

A) A large adenoma (arrow) surrounds the major portion of a nasoturbinate in Level I in a female mouse exposed to 16ppm PA for 2-years. The adenoma is solid in the basal portion, microcystic in the peripheral portions, and partially fills the dorsal meatus and the dorsal portion of the lateral meatus on this side of the nasal cavity. B) The adenoma exhibits both transitional (arrow) and respiratory, ciliated (arrowhead) epithelial features. Original objective magnification: A) 4×, B) 20×.