The key difference in this study was the presence of a single gene from the H3N2 human virus: the PB2 protein, which gave the hybrid viruses the ability to spread easily among the lab mice.

这项研究中一个关键的不同点就是H3N2人类流感病毒中存在一个蛋白基因：PB2蛋白，它的存在使得杂交病毒具有了在实验小鼠之间轻易传染的能力。

youdao

Perls says the key to successfully predicting long life was the sophisticated statistical analysis of many different gene variations that each played some role.

珀尔斯说，成功预测长寿与否的关键，在于精密地统计分析具有不同作用的基因种类。

youdao

The key is a gene called Dio3, which governs the levels of thyroid hormone in the brain.

有一种基因Dio3起着关键作用，因为它支配脑中甲状腺激素的分泌。

youdao

Genasense, which is used in combination with chemotherapy, works by targeting a key "cell suicide" gene called bcl-2 and then inducing cancer cells to kill themselves.

FORBES: Magazine Article

The bad version of the gene appears to boost osteoporosis risk by limiting the production of the BMP-2 protein, a key molecular stimulator of bone growth, says Dr. Stefansson.

FORBES: DeCode Discovers Osteoporosis Gene