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Examples of histopathological appearance of adenomas and adenocarcinomas detected on the lung surface, and their incidence and multiplicity in 9-month old A/J mice, either males (M) or females (F). The mice were either sham-exposed (35M and 33 F) or exposed to ECS during the first 4 months, starting at birth (35M and 35 F), or ECS-exposed and treated with either AsA (35M and 34 F) or naproxen (35M and 35 F) from weaning until the end of the experiment.
