The labeled ApoE - containing lipoproteins were internalized by neurons that expressed low density lipoprotein ( LDL ) receptors.是什么意思？

The labeled ApoE - containing lipoproteins were internalized by neurons that expressed low density lipoprotein ( LDL ) receptors.

只有表达出低密度脂蛋白 ( LDL ) 受体的神经元才能吸收含ApoE的脂蛋白.

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

labeled

[医]标记的，示踪的；

例句
On the customs declaration, the sender labeled the freight as agricultural machinery...
在报关单上，寄货人将货物列为农用机械。

containing

v. 控制( contain的现在分词 )，克制，牵制，包含；

例句
...an appeal to save a library containing priceless manuscripts...
为挽救存有珍贵手稿的图书馆的一次募捐

were

be的过去时复数和第二人称单数形式，有时代替 was,用于条件从句、动词 wish 之后等；

例句
Shops, houses, and vehicles were set ablaze.
店铺、房子和车辆全都陷于火海。

internalized

v. 使内在化( internalize的过去式和过去分词 )；

例句
Over time she internalized her parents' attitudes.
随着时间的流逝她认同了父母的看法并将之融为自我意识的一部分。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

neurons

--

例句
The neurons are the most sensitive cells to anoxic injury.
神经元是对缺氧最敏感的细胞.

that

det. 那个，那；pron. 那个，那；conj. 多么，如此…以至，用于某些动词、形容词和名词后，引出各种从句；adv. 不那么，那样；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

expressed

v. 表达( express的过去式和过去分词 )，（用符号等）表示，榨，[express oneself]（如在说话、写作或绘画中）表达（自己）的意见；

例句
He expressed his appreciation for what he called Saudi Arabia's moderate and realistic oil policies.
他表示很感激沙特阿拉伯推行的被他称作稳健而务实的石油政策。

low

adj. 低的，矮小的，楼下的，低洼的，沮丧的，下贱的；adv. 低声地，谦卑地，底下地；n. 低点，低水平，牛的叫声；vi. （牛）哞哞叫；

例句
In absolute terms British wages remain low by European standards.
根据欧洲标准，英国工资的绝对值依然很低。

density

n. 密度，稠密，浓厚，[物]浓度，比重，愚钝；

例句
The compression and density make this a difficult book to read, but it richly rewards the effort.
这本书内容丰富，思想深刻，很难读懂，但是非常值得一读。

lipoprotein

n. <生化>脂蛋白；

例句
The relation between high - density - lipoprotein cholesterol and ischemic cerebrovascular disease: a clinical study.
缺血性脑血管病与高密度脂蛋白关系的临床研究.

LDL

abbr. learning disabilities limited 一定程度上丧失学习能力，loudness discomfort level 引起不适的噪音级别，low-density lipoprotein 低密度脂蛋白；

例句
Age - related alteration in hepatic acyl - CoA: cholesterol acyltransferase and its relation to LDL receptor and MAPK.
(与年龄相关的肝酰基辅酶A的改变: 胆固醇酰基转移酶及其与LDL受体和MAPK的关系).

receptors

--

例句
Ironically, in some instances, purposely stimulating capsaicin receptors can alleviate pain.
在某些情况, 刻意刺激辣椒素受体,反而可以消除疼痛.