苦瓜中含有生理活性蛋白质，可以帮助提高免疫功能和预防癌症。

Bitter gourd contains a physiologically active protein that can help improve immune functions and prevent cancer.

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锻炼不仅能帮助你提高免疫力，而且可以帮助你摆脱焦虑。

Exercise not only helps you improve your immunity, but also helps you release your anxiety.

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目的：探讨复方参芪颗粒提高免疫功能及抗应激能力的药理作用。

OBJECTIVE To study the pharmacological action of immune enhancement and anti-stress capability of compound Shenqi granules.

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Now, if I was a person that was designing a vaccine and I noticed that this was the response that it got, that antibodies were produced, they reached some intermediate level, they started to fall, I would say, "Well I haven't stimulated the immune system enough, let me re-boost, let me give another dose of antigen."

现在,如果我正在研究一种疫苗,我注意到机体会对这种疫苗产生应答,也就是会产生抗体,当抗体浓度达到中等水平后,就开始下降,就可以说,疫苗对免疫系统刺激还不足,我需要提高抗原浓度,让我再把剂量再加大一倍

耶鲁公开课 - 生物医学工程探索课程节选