neoplasm
• seen in older males
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• tumor formation is more prevalent and starts earlier in males compared to females
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liver/biliary system
• preneoplastic nodules are first detected at about 160 days of age in males
• liver nodules in quadruple transgenic mice are larger and more numerous compared to triple transgenic mice that are wild-type at the Trp53 locus
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• seen in older males
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• tumor formation is more prevalent and starts earlier in males compared to females
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