neoplasm
• 40% develop lung tumors at 2.5 months of age
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• although mutants develop lung adenomas, they show a 6-8 fold delay in tumor incidence compared to single transgenic Tg(SFTPC-RAF1-BxB)1Urr mice
• exhibit an increase in the number of apoptotic cells and a decrease in the number of proliferating cells in lung ademonas
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respiratory system
• 40% develop lung tumors at 2.5 months of age
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