一组老鼠在“充实”的环境中成长，这使得老鼠可以与其他老鼠互动、玩玩具，并接受迷宫训练。

One group developed in an "enriched" environment, which allowed the rats to interact with other rats, play with toys, and receive maze training.

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这只转基因鼠小弟名叫荷比-杰。通过使控制其神经元传输的基因过表达，它走迷宫和记忆玩具的能力得到了极大的提升。

The genetically engineered rat, Hobbie-J, over-expresses a gene that regulates neuron communication, greatly enhancing the rat's ability to navigate mazes and remember toys.

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