通路

A cell is not just a well-mixed container of chemicals, but an extremely intricate system of membranes, vesicles and signaling pathways. Although a number of milestones have been built though endeavor for over a century, much is still left to discover about the spatial organization and mobility of macro-molecules (such as proteins, protein complexes, nucleic acids, signaling substances, etc.) in cells, and the spatial relationships between cells in tissues.

细胞不仅是大量化学物质的容器，也是膜、泡囊和信号传导通路组成的复杂系统，尽管通过一个多世纪的努力，细胞生物学研究取得了若干重大进展，但是关于细胞内特定高分子(如蛋白质、蛋白质复合体、核酸和信号传导物质等等)的空间组织和运动规律以及组织内细胞空间关系等许多问题的机理目前仍不清楚。

Objective To investigate in vitro MRI detection of axonal transport for tracing optic nerve pathway and cerebral projection as well as effect of MnCl2 concentration in the vitreous body for transsynaptic crossing.

目的 探讨Mn(上标 2+)增强磁共振扫描对活体大鼠视觉传导通路及皮层投射的显示以及眼球玻璃体内Mn(上标 2+)的浓度对跨节转运的影响。

Methods Six adult Wistar rats were randomly divided into two groups: group A (n=3) and group B (n=3). 2μl volume of 0.8mmol/L and that of 1.6mmol/L aqueous solution of MnCl2 was injected into the vitreous body of the left eye of group A and group B respectively.

6只Wister大鼠，随机分为两组，每组3只，一组左侧眼球玻璃体内注射0.8mmol/L MnCl2 2μl，一组左侧眼球玻璃体内注射1.6mmol/L MnCl2 2μl，用1.5T超导磁共振扫描，观察视觉传导通路的显示；一周后6只大鼠右侧外侧膝状体注射1mmol/L MnCl2 1μl，观察视觉皮层的定位。

A circuit breaker having a trip unit includes a lock out assembly positioned adjacent the trip unit for controlling access thereto.

一种具有跳闸装置（24）的断路器（10）包括一个邻近于跳闸装置（24）设置的锁闭组件（42），其用于控制向着跳闸装置的通路。

Accordingly, the transition metal dopant may form a filament in the resistive layer that operates as a current path.

因此，过渡金属掺杂物可以在电阻层中形成用作电流通路的丝。

The only access to the town is the bridge.

到镇上唯一的通路是一座桥。

The only access to the town is through the bridge.

到镇上唯一的通路是经过一座桥。

The only access to the town is across the bridge.

到镇上唯一的通路是经过那座桥。

The only access to the town is across the bridge.

到镇上唯一之通路是经过一座桥。

B. The only access to the town is across the bridge.

到镇上唯一的通路是经过一座桥。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。