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Tumor incidence in Apcmin/+ mice expressing different levels of Mdm2. (A) Representative portion of small intestines from wild-type and mdm2puro/Δ7–12 mice. The arrowheads indicate tumors. (B) The number of adenomas along the length of the small intestines from Apcmin/+ mice (average tumor number with standard deviations indicated by error bars).
