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After collecting the bacterial cells and breaking the cell by means of ultrasonic, the inclusion bodieswere extracted. The extracted products were denatured with 8 mol/L urea and purified through Ni-NTAcolumn. The purified products were renatured by dialyzation, and then were analyzed by SDS-PAGE.

在优化条件下诱导重组菌表达，收集菌体经超声波破碎和裂解后提取不溶性包涵体，以8mol／L尿素处理包涵体提取物并进行Ni-NTA亲和层析纯化，纯化表达产物经透析复性后以SDS-PAGE分析其复性效果。

Nepalensis wall polysaccharide was prepared with hot water extraction,ethanol precipitation,dialyzation,and lyophilization.the crude polysaccharide was separated by deae-cellulose chromatography and purified by sephadex g-200 chromatography.the inhibit effect of the polysaccharide on lipid peroxidation of mice liver was conducted by tba method.the model of liver-injury induced by carbon tetrachloride（ccl4was used to validate the variety of the realated ast.results onefold ingredient polysaccharide was obtained after isolated and purified.conclusion the ingredient can remarkably inhibit lipid peroxidation of rat liver and significantly reduce activity of ast.

用热水提取，乙醇沉淀提取粗多糖，再经sevag法去除蛋白，透析去除小分子物质，冷冻干燥得楮头红多糖粗品；采用deae-52纤维素柱层析和sephadex g-200凝胶柱层析进行分离纯化；用tba法考察多糖的抗脂质过氧化作用；采用ccl4急性肝损伤模型，测定其血清中ast变化。结论获得一个楮头红多糖组分。tba法表明该组分对小鼠自发性脂质过氧化具有显著的抑制作用；在保肝试验中，给药组能明显抑制ast的升高，对肝损伤有一定的保护作用。

The average yield of AFP purified from an embryon was 0.7mg and the recovery of AFP was 45.71%. The efficiency of coupling measured by ultraviolet absorption method was 95.38%.The purified AFP was homogenous in SDS-PAGE. This method is suitable for scale manufacture of AFP.

本文报道用3～5个月胎龄的胚胎组织作材料，采用盐析、凝胶层析与亲和层析相结合的方法分离纯化AFP，以建立一种适合大批量生产AFP的工艺方法。

Methods The SpaA was purified by electroelution from NaOH-extracted antigen of Erysipelothrix rhusiopathiae strain C43311. The rSpaA-N was expressed in E. coli BL21 as a soluble protein by IPTG inducing,and purified with GST affinity chromatography. Mice of each group were subcutaneously immunized three times with 50μg or 100 μg of native SpaA, rSpaA-N or NaOH-extracted antigen with in complete or incomplete Freund adjuvant at 2-week intervals.

将猪丹毒丝菌C43311株SpaA-N以可溶形式表达在大肠杆菌BL21中，用GST Bind Resin纯化试剂盒纯化rSpaA-N，采用电洗脱法从猪丹毒丝菌C43311株NaOH提取抗原中纯化天然SpaA，将rSpaA-N、天然SpaA和NaOH提取抗原制成亚单位疫苗，同时设GST及生理盐水对照组，间隔2周分3次皮下免疫小鼠，第3次免疫后2周用100LD50猪丹毒丝菌C43065株进行腹腔攻毒，采用间接ELISA方法检测免疫组小鼠血清的抗体动态变化。

When drinking purified water or mineral spring water from , except enjoying the convenience brought by them, we also want to possess health brought by purified water. But is this way to drink water really healthy and hygeian?

人们用饮水机畅饮纯净水或者矿泉水的时候，除了想享受饮水机为生活带来的便捷外，也想享受纯净的水质所带来的健康但是，这样的饮水方式是否真的健康、卫生？

A pair of primers producing 614bp amplification fragment were designed based on the sequence of the C\|polyhedrin gene of Bombyx mori CPV,and the expected amplification products were obatined when genomic dsRNAs isolated from purified BmCPV,DsCPV and Lymantria dispar CPV were used as templates.Genomic dsRNAs isolated from Heliothis armigera CPV and DNAs from Lymantria dispar nuclear polyhedrosis virus and DNAs from midgut tissue of healthy Dendrolimus spectabilis larva did not yield any amplification products.The detection limit of purified DsCPV genomic dsRNAs was 1.0pg.

依据家蚕质型多角体病毒质型多角体蛋白的核苷酸序列设计一对引物，从纯化的DsCPV\，BmCPV和舞毒蛾质型多角体病毒的基因组dsRNA可成功地扩增出长614bp的目的片段，从提取的健康松毛虫幼虫肠组织的DNA、舞毒蛾核型多角体病毒基因组核酸、以及棉铃虫质型多角体病毒基因组核酸，未能扩增出目的片段。

METHOUS: An aqueous extract of Rhizoma menispermi, an alcohol purified extract named phenolic alkaloids of menispermum dauricum and Rhizoma menispermi polysaccharide were isolated and purified by using the three-step method.

用三步法初步分离、纯化北豆根提取物，得到北豆根水提液(aqueous extract of rhizome menispermi， RMAE)、醇提液的初步纯化产物蝙蝠葛酚性生物碱(phenolic alkaloids of menispermum dauricum， PAMI)和北豆根多糖成分(rhizome menispermi polysaccharide， RMP)。

Methods The type Ⅳ pilin protein PILE was purified by HisTrapTM HP affinity columns ,then the purified protein was examined by SDS-PAGE and Western blot.

使用HisTrapTM HP亲和层析柱纯化Ⅳ型菌毛蛋白PILE，并对纯化蛋白进行SDS-PAGE和Westernblot鉴定。

In order to get purified purified commercially luciferase, we selected whole gene fragment of Photinus pyralis as well as gene fragment deleting 18-nucleotide at 5'termination, which was synthesized according to P〓 template.

为了能得到商品纯的虫荧光素酶，将取自P〓质粒中的全长的北美萤火虫荧光素酶基因片断，及以P〓为模板合成的5＇端缺失18个核苷酸的虫荧光素酶基因片断。

Chicken IL-15(ChIL-15), Which was discovered in 2001, plays a main role in activating NK cells and CD8+ memory T cells, and may therefore have potential as a vaccine adjuvant.According to published ChIL-15 gene sequence, a pair of primers were designed and synthesized to clone ChIL-15 cDNA from ConA-activated chicken splenocytes by RT-PCR. Recombinant plasmid pUC19ChIL-15 carrying the ChIL-15 gene was constructed. The gene encoding mature ChIL-15 (mChIL-15) was amplified from pUC19ChIL-15 by PCR and cloned into pMD 18-T vector. After digested with Kpn I /Pst I , the mChIL-15 gene was subcloned into prokaryotic expression vector pPRoEX橦Ta and transformed into E.coli DH5a .The transformant was induced by IPTG, and the recombinant ChIL-15(rChIL-15) was expressed as a fusion protein with a histidine hexamer tag at the N-terminal end of the protein. Following expression, the protein was purified by ProBond?Nickel-Chelating Resin. The uninduced and induced protein lysates and the purified protein were separated by SDS-PAGE and transferred onto nitrocellulose membrane to identify rChIL-15 by Western blot. The rChIL-15 was used to immune the guinea pig to obtain rChIL-15 polyclonal antibody.

参考已发表的ChIL-15基因序列，设计合成引物，应用RT-PCR技术从刀豆球蛋白A活化的白来航鸡脾淋巴细胞中克隆ChIL-15 cDNA，将其与SmalⅠ酶切处理的pUC19载体连接，构建重组质粒pUC19ChIL-15；用PCR技术从pUC19ChIL-15中扩增出去信号肽的成熟ChIL-15(mChIL-15)基因，与pMD 18-T载体相连构建重组质粒pMDChIL-15；然后用KpnⅠ／PstⅠ双酶切下mChIL-15基因片段，定向亚克隆到经同样酶切处理的带有6个组氨酸标签的表达载体pP_RoEX~HTa中，构建重组质粒pP_RoChIL-15，对其测序确认读框正确后，转入大肠杆菌DH5α中诱导表达并进行纯化，用重组ChIL-15(rChIL-15)免疫豚鼠，制备多克隆抗体；再用HindⅢ／PstⅠ从质粒pP_RoChIL-15上切下mChIL-15基因，定向亚克隆到经同样酶切处理的杆状病毒转移载体pMelBacB中，经酶切、PCR和序列测定鉴定后，与杆状病毒线形化DNABac-N-Blue~(TM DNA共转染Sf9昆虫细胞，经三轮蚀斑纯化，构建重组杆状病毒rBac-ChIL-15，用该重组病毒感染处于对数生长期的Sf9细胞，按不同的时间收取样品，离心后对其上清和沉淀进行SDS-PAGE和Western blot分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。