The donated milk was probably to blame: recent laboratory research on rats has shown that rats briefly exposed to the substances aflatoxin tend to develop liver cancer when fed casein, a milk protein.

捐赠的牛奶可能是罪魁祸首：最近对老鼠的实验室研究表明，给老鼠喂食酪蛋白（一种牛奶蛋白）时，短暂接触过黄曲霉毒素物质的老鼠容易患肝癌。

youdao

Another telling experiment, conducted on rats, did not rely on cooking.

另外一个在老鼠身上的实验与烹饪没有关系。

youdao

Studies on rats have shown that substances that are produced only when muscles are being used play a crucial role in metabolising fat and sugar.

对老鼠的实验发现，一些在脂肪和糖的代谢中起关键作用的物质，只在使用肌肉时产生。

youdao

If Skinner kept the focus on rats and pigeons and dogs, he would not have the impact that he did but he argued that you could extend all of these notions to humans and to human behavior.

如果斯金纳只是研究老鼠鸽子或是狗，他就不会拥有如此巨大的有影响力了,但他宣称，这些概念是可以应用到,人类以及人类行为中去的。

耶鲁公开课 - 心理学导论课程节选

But it gets passed on when the rats get eaten by cats.

但当老鼠被猫吃掉时，他就死掉。

耶鲁公开课 - 心理学导论课程节选

Tracy Kelly, of the charity Diabetes UK, cautioned against extrapolating to humans from studies on rats.

BBC: NEWS | Health | Craving for junk food 'inherited'

The team of researchers have tested on rats a device that heats a wound to kill off bugs.

BBC: 'Melt in the body' electronics devised

The team's experiments on rats and monkeys have shown that certain brain functions can be replaced with signals via electrodes.

CNN: Brain implants: Restoring memory with a microchip