在生物体外

The ability of magnesium trisilicate to adsorb tetracycline and its relation to pHof the medium have been investigated UV-spectrophotometrically.

本文应用紫外分光光度法研究了体外三硅酸镁吸附四环素的能力及其与介质 pH 的关系；并应用尿药法研究了三硅酸镁及其在表面活性剂和枸橼酸的存在下对四环素吸收的影响；测定了三种不同处方的四环素混悬剂的相对生物利用度并进行了有关参数的统计比较。

Based on the techniques of soybean peptides processing, this paper analyzes the possibility of producing exorphins during soybean peptides production, and dis cusses the safety of soybean peptides food.

外啡肽是一类来自人体外的具有类吗啡活性的生物活性肽，在对人体具有积极的生理作用的同时也存在着一些安全隐患。

Especially in cancer patients, some cells are sloughed off from the gastrointestinal tract, so small amounts of DNA from these cells present in stool samples can be examined for the presence of cancer biomarkers.

尤其是对癌症病人，一些肿瘤细胞会脱离胃肠道随粪便排出体外，所以在粪便样本中检测到得这些细胞的DNA就可以作为判断是否有癌症症状的生物标记物了。

Up to now two series of compound have been synthesized and both of them show reasonable activities in bioassay in vitro .

经过大家的努力，已经有两类设计出来的化合物进行了有机合成。它们在初步的体外生物活性测定实验中都显示出了良好的抑制活性，有望成为先导化合物。

Both in vivo and in vitro bioassay approaches offer their own advantages and disadvantages, some of which can be addressed using the toxicity identification and evaluation procedure.

无论是在体内和体外生物测定都分别有其特有的优点和缺点，其中一些测定法可以使用于毒性鉴定和评价程序。

We conclude that spontaneous malignant transformation may represent a biohazard in long-term ex vivo expansion of hMSC.

研究的结论是自发恶性转化可能在hMsC长期体外扩张中产生生物危害。

Enucleated within 24 hours after death. 2. immunohistochemical identification of cultured conjunctival cells When the second cultured generation of conjunctival cells close to confluence, the glass coverslips were removed in situ fixation by methanol and DAB color immunohistochemical staining by CK13 monoclonal antibody in time.

由于其具有多向分化的潜能，在体外又较容易培养扩增，加之具有潜在的细胞治疗价值，故成为生物学界和医学界的研究热点。

Transfection particles for delivery of nucleic acid into higher eucaryotic cells in vitro and in vivo comprises one or more nucleic acid molecules condensed by organic cationic molecules.

用于在体内和体外传送核酸至高级真核生物细胞内的转染颗粒，包括一个或多个由有机阳离子分子凝聚的核酸分子。

This study has provided first molecular evidence that the mRNA expression of CYP1A was significantly induced in response to domoic acid. We suggest that phaseⅠxenobiotic metabolizing enzymes CYP1A, instead of phaseⅡxenobiotic metabolizing enzymes GST, might be major detoxified enzymes in the metabolism of amnesic shellfish poisoning toxin, domoic acid.

我们认为第Ⅰ时相去毒酶CYP1A是DA代谢的关键的酶，它可通过生物转化降低DA的毒性，而第Ⅱ时相去毒酶GST在DA代谢过程中的作用不显著，使毒素不能被有效地排出体外。

At the same time,this thesis also determined the in vitro and in vivo antioxidant activity of different fractions,discussed the source of antioxidants in vinegar and compared the antioxidant activitydifference of different kinds of vinegars.

本论文在系统研究食醋功能的相关研究文献和现代自由基医学的有关氧化损伤与疾病关系的理论和实验基础上，以自由基医学理论为指导，应用现代生物技术研究了食醋不同极性、不同分子量分离组分的抗氧化活性，确定较高自由基清除活性组分；对食醋不同组分的体外抗氧化活性进行综合评价；对食醋的体内抗氧化性进行研究；并对食醋中抗氧化性成分的来源、不同品种食醋抗氧化性差异进行了探讨。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。