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Primary cultured rat hepatocytes were cultured with various concentrations of sodium fluoride for 24 hours to study the toxicity and possible mechanism induced by fluoride from morphological, enzymological and biochemical changes.

收集细胞培养上清液，测定ALT和AST活性和MDA含量。用上述指标来评价氟化钠对肝细胞的毒性作用及其可能机制。

Objective:1 To study the changes of the morphological structure and the type of myofibrilla in soleus in different seasons.

目的：1。研究不同季节达乌尔黄鼠比目鱼肌的肌纤维形态与肌纤维类型的变化。2。

To study the changes of the morphological structure and the type of myofibrilla in soleus in different seasons after tail-suspend 14 days.

研究不同季节尾部悬吊对达乌尔黄鼠比目鱼肌肌纤维形态与肌纤维类型的影响。3。

Objective To compare the morphological differences in soleus between tail-suspended and 30-month-old rats.

目的观察尾部悬吊和30月龄大鼠比目鱼肌发生萎缩过程的异同点。

To study the changes of the morphological structure and the type of myofibrilla in soleus during the different peirod of hibernation.

研究冬眠不同时期达乌尔黄鼠比目鱼肌肌纤维形态与肌纤维类型的变化。4。

The morphological observation has identified 37 mutant lines, the majority ofwhich showed anomalies in axis and somite formation. Ten of them are kept forfurther study.

表型观察法筛选了约 200 个 F2 家族，获得了 37 个突变品系，其中以体轴和体节发育异常的突变体为主，将其中 10 个品系保种，以备进一步研究。

There are linguistic reasons too why spelling reform is tricky to undertake. Written language is more than a phonetic version of its spoken cousin: it contains etymological and morphological clues to meaning too. So although spelling English more phonetically might make it easier to read, it might also make it harder to understand.

拼写改革之所以难以推行也有着语言学本身的原因，毕竟语言的书写系统不仅仅只是记音的符号，它本身还具有与语义相关联的语源学以及形态学上的线索，所以英文拼写由单词读音决定虽然解决了读音的问题，但是这种拼写理解起来可能更难。

Objective To investigate the localization and the morphological changes of manchette during mouse spermiogenesis.

目的 通过观察manchette结构在小鼠精子细胞中的定位和形态变化，探讨其在小鼠精子细胞变态成形过程中的作用和意义。

We report a sponge spicule assemblage from the Lower Cambrian black shales of the Hetang Formation at Xiuning in Anhui Province, South China. Based on morphological differences, the spicules can be divided into 4 types including monaxons, biaxons, triaxons and tetraxons.

本文报道皖南休宁县早寒武世荷塘组黑色页岩中产出的海绵骨针化石组合，这些海绵骨针化石具有较高的丰度和分异度，它们以二轴四射针、T型针、三轴六射针和三轴五射针为主。

Our results provide the morphological information for choosing a suitable spile and confirming its length for the external carotid artery intubatton.

其内径为 1 2 5± 0 0 5mm。结论本文结果为颈外动脉插管术选用适宜导管和确定插管长度提供了形态学资料

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。