Cancer is a common diagnosis in many mammalian species, yet they vary in their vulnerability to cancer. The factors driving this variation are unknown, but life history theory offers potential explanations to why cancer defense mechanisms are not equal across species.

中文翻译：

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哺乳动物的终生癌症患病率和生活史特征

癌症是许多哺乳动物物种的常见诊断，但它们对癌症的易感性各不相同。驱动这种变异的因素尚不清楚，但生活史理论为为什么癌症防御机制在物种间不相等提供了潜在的解释。