奶牛和人一样，也能在生长激素的作用下分泌类胰岛素生长因子，这种蛋白质被释放到血液里，从而进入到牛奶中。
Cows, like humans, produce insulin-like growth factor in response to growth hormones and release it into the blood, and the protein makes its way into their milk.
这种情况改变了胰岛素样生长因子或类胰岛素等其他激素的活动，实验室的研究表明，后者可能会关系到寿命的延长。
That alters the activity of other hormones, including insulin-like growth factor or IGF-1 - a substance that laboratory studies suggest might be manipulated to lengthen lifespan.
这种情况改变了胰岛素样生长因子或类胰岛素等其他激素的活动，实验室的研究表明，后者可能会关系到寿命的延长。
That alters the activity of other hormones, including insulin-like growth factor or IGF-1 - a substance that laboratory studies suggest might be manipulated to lengthen lifespan.
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