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Attenuation The trp operon is also controlled by attenuation A leader sequence in the polycistronic mRNA upsteam of the coding region of the trpE structural gene encodes a 14 amino acid leader peptide including two tryptophan residues The RNA leader sequence can for several possible stem-loop secondary structures,one of which can act as a transcription terminator whilst a different stem-loop can act as an anti-terminator.

弱化作用 trp 操纵子也受到弱化作用的调控。在trpE结构基因编码区上游的多顺反子mRAN上有一段前导序列，可以编码一个含有14个氨基酸的前导肽，此肽中含有两个色氨酸残基。

Since the city life sludge is rich of plant nutrition elements such as phosphorus,nitrogen, potassium,agricultural and forestry deposing has become an important way to deal with it,But the sewage sludge contains heavy metals,which maybe contaminate the field and crop quality if it dose not used efficiently.

由于城市生活污泥含有丰富的氮、磷、钾等植物营养元素，城市生活污泥的农林处置成为其资源化处置的一条重要途径。但城市生活污泥中含有重金属，利用不合理将会对农田土壤和作物品质造成危害。

The mixture was added to islets medium,and cultured at 37℃in a humidified atmosphere of 5%CO_2 and 95%air for 8 hours.

将siRNA-转染试剂混合液加入含有胰岛的培养基中，在37℃的CO_2培养箱中培养8h后将培养基更换为含有血清和抗菌素的完全培养基，继续培养24、48h。

These can be text files if they contain lots of spaces for indenting but line-art images that contain large white or black areas are far more suitable.

这些可以是文字文件，如果它们含有大量的空间行缩进，但最先进的图像含有大量白色或黑色的领域更为合适。

Products containing aromatics or naphthenes have lower aniline points than products containing paraffins.

含有芳烃和环烷烃的产品比含有石蜡的产品的苯胺点相对要低。

Products containing aromatics or naphthenes have lower anilinc points than products containing paraffins.

含有芳烃和环烷烃的产品比含有石蜡的产品的苯胺点相对要低。

Air is clean spend and fall next bacterium are current air of product of province IVC system, isolator purifies Jiangsu to roughly two kinds of air current organize means, one kind sends a top to answer for the top: IVC remands wind filters through containing directly top of basket case case, horniness isolator remands on ben top wind; remands another kind to be the same as one side parallel: IVC remands wind contains filter film with a side face in basket box undertake inside aperture, soft qualitative isolator is sent by ben a side wind is answered on wind, means of two kinds of air current all is be not one-way and popular form.

目前实验动物相关国家标准对此类设备各项技术指标的检测并无说明，笔者对该类产品按江苏省地方标准[1]检测进行了初步的探索。1空气洁净度和落下菌目前江苏省IVC系统、隔离器产品空气净化大致有两种气流组织方式，一种为顶送顶回：IVC送回风直接通过含有过滤膜的笼箱盒盖，硬质隔离器在内室顶上送回风；另一种为同一面平行送回：IVC送回风在笼箱同一侧面含有滤膜孔内进行，软质隔离器由内室一侧送风对面回风，两种气流方式均为非单向流行式。

It is detected by the Chinese Academy of Sciences Ocean: muscle contains more than 10 kinds of essential amino acids, fat containing 12.5%"DHA" and "EPA", to soften the heart and brain blood vessels, and promote brain development, improve the intelligence, prevention Alzheimer's disease has a good effect; cartilage and bone marrow (commonly known as "Long tendons") have anti-cancer factor, can be completely direct consumption, known as "Shark fin, bone sturgeon," said.

据中国科学院海洋所检测：肌肉含有十多种人体必需的氨基酸，脂肪含有12.5%的&DHA&和&EPA&，对软化心脑血管，促进大脑发育，提高智商，预防老年性痴呆具有良好的功效；软骨和骨髓有抗癌因子，可完全直接食用，素有&鲨鱼翅，鲟鱼骨&之说。

This is because milk contains more calcium and dairy protein, sugar and starch contains relatively reduced; easy to form after ingestion of calcium soap cause constipation; life without the law, the baby did not train on time and bowel habits, but also easily lead to constipation; some chronic diseases such as rickets, Dermatomyositis also easily leads to malnutrition, such as infants and children caused by constipation, young parents must pay more attention to early prevention.

这是因为牛奶中含有更多的钙和酪蛋白，糖和淀粉含有量相对减少；食入后容易形成钙皂引起便秘；生活没有规律，对婴儿没有训练成按时排便的习惯，也容易引起便秘；有些慢性疾病如佝偻病、皮肌炎等导致营养不良也易引起婴幼儿便秘，年轻的父母必须对此多加注意，及早预防。

At present time people has found that various oxidants exist in injured cells, including peroxide and other free radical (eg: peroxide anion and hydroxide radical ion); these ROS also exist in abnormal cells arose from cell cleavage block and cell function loss.

目前已经发现，损伤的细胞中含有较多的各类氧化物，包括过氧化氢以及其它自由基(例如过氧化物阴离子和氢氧根离子)；在因细胞分裂阻断以及细胞功能丧失所引起的异常细胞中也含有这些活性氧类物质。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。