这种蛋白质与老年痴呆症相关。
The protein is associated with Alzheimer's disease. Photograph: getty.
实际上，产生这种蛋白质的基因被压制了。
这种蛋白质被称为神经生长因子（NGF.）
如果这种蛋白质机械故障，疾病往往遵循。
If this protein machinery malfunctions, illness and disease often follow.
这种蛋白质最早是在水母中，发现并被提炼出来的。
The protein was first discovered and first isolated from this jellyfish here.
但是研究人员发现，这种蛋白质消灭了一些病毒。
But the researchers found that the protein fought off a number of viruses.
目前还不清楚这种蛋白质是否对人类也起到相似作用。
It is still unknown if the protein plays a similar role in people.
这种蛋白同时也出现于脊椎液中，并且极小量存在于血液里。
It's also present in spinal fluid and, in very small quantities, in the blood.
人类的免疫系统可以识别这种蛋白，并产生相应的抗体攻击蛋白位点。
The human immune system "sees" them and tailor-makes antibodies to attack the bug.
这种蛋白质是免疫系统中的“侦察兵”，它们负责传输入侵者的信息，之后免疫系统才能搜索入侵者并将其摧毁。
These are ''spotter'' proteins that tag invaders for the immune system to hunt and destroy.
这种蛋白质是免疫系统中的“侦察兵”，它们负责传输入侵者的信息，之后免疫系统才能搜索入侵者并将其摧毁。
These are ''spotter'' proteins that tag invaders for the immune system to hunt and destroy.
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