The reason for this curious result seems to be that the brain plaques associated with Alzheimer's disease are themselves turning out pregnancy zone protein.

出现这一结果的原因可能是，与阿尔茨海默氏症相关的大脑斑块自身分泌这一蛋白。

Levels of a substance called pregnancy zone protein had been unusually high, even before their symptoms appeared, in some of those who went on to develop Alzheimer's disease.

某些患上阿尔茨海默氏症的志愿者，其血液中一种名为妊娠带蛋白的物质含量非常高，甚至在症状出现前也是如此。