IL5 and adenoma: In specific, il5+/+ mice had lung neoplastic lesions composed of 69 ± 5% AAH, 22 ± 4% adenomas, and 9 ± 2% adenocarcinomas, while il5-/- mice had 75 ± 3% AAH, 19 ± 2% adenomas, and 6 ± 1% adenocarcinomas (P > 0.05).