表达性

The results show that the CD29, CD49, CD90 express in the gonium and the primary spermatogenous, but there are not expression in the oocyte, the second spermatogenous and the spermatocyte.

研究结果表明，CD29， CD49， CD90在雌性生殖腺各级卵母细胞中均不表达，位于生殖褶边缘的性原细胞中可见表达；在雄性生殖腺的初级精原细胞中表达，但在成团分布的次级精原细胞、各级精母细胞中均未表达。

The different fishes which are employed in the present studies are wild-type salmon, cultured salmon of freshwater and seawater, sea perch and fat greenling. The complete CT gene sequences of salmons are obtained by PCR amplification. The partial CT sequences of sea perch and fat greenling are obtained by in vitro cloning PCR method. Alignment of obtained CT sequences with other fish CT shows that CT appears to be well conserved among the same family. And the relative in taxonomy is far away, the similarity of different fish CTs is low. On the contrary, the closer the relative in taxonomy is, the higher the similarity of different fish CTs is. The sCT is expressed in pGEX-4T-X by recombinant form . We also succeed in the research of sCT expression alone by expression PCR. In addition, sCT antiserum is obtained using GST-sCT as antigen, and the high titer is tested by double immunodiffusion. In the rat bioassay, administration of 50 μg recombinant protein evoked significant hypocalcemia at 1 h after the data are analyzed by t-test.

本文用PCR方法克隆了野生鲑鱼、养殖鲑鱼的降钙素基因，并应用体外克隆PCR的方法首次克隆出鲈鱼、六线鱼降钙素的部分基因序列，通过对克隆的降钙素序列的比较研究，结果显示同一科的鱼降钙素序列保守性较高，同时，根据降钙素的部分氨基酸序列进行了降钙素相似性的比较研究，结果显示在分类学上，分类地位较远的鱼，其降钙素相似性较低，分类地位越接近的鱼，其降钙素相似性越高；我们利用谷胱甘肽S-转移酶(Glutathions S-transferase，GST)融合表达载体pGEX-4T-X对克隆的鲑鱼降钙素基因进行了融合表达研究，应用表达PCR的方法对降钙素基因的独立表达进行了初步的研究探索，并将纯化的融合蛋白作为抗原，获得了高效价的兔抗鲑鱼降钙素免疫血清；生物活性研究表明，大肠杆菌表达的融合蛋白具有显著的降血钙作用。

The results showed that human transferrin could be expressed in these cell lines and mouse or goat mammary gland following transfection, and its expression level could be improved dramatically when it was driven by rabbit enhancer and promotor as compared with goat beta lactoglobulin promotor. Transgenic mice were generated by either microinjection or lentivirus infection.

结果显示所有表达载体均可指导人转铁蛋白在细胞以及小鼠和山羊乳腺中表达，兔转铁蛋白增强子与启动子组合可显著性增加人转铁蛋白的表达水平，且其指导表达的效率明显高于山羊β乳球蛋白启动子。

Among the 20 samples of IGF- 1 group, a 8-cell stage embryo, a morula and two blastula were found as positive by the red colour appearance .

IGF上的表达 2～8细胞胚胎 18个，桑堪胚 1个，囊胚 2个，共计 ZI个胚胎用于＊F2 检测，阳性表达14个，其中强阳性表达7个，弱阳性表达7个，分布于各阶段胚胎，在胚胎细胞中呈现深、浅程度不同的橘红色染色。l级和 2级胚胎 IGFZmRNA的阳性表达差异有显著性。

There was a stastical difference of the expression of hTRT protein among well differentiated adenocarcinoma, poor differentiated adenocarcinoma and mucoid carcinoma. And there was a highly significant positive correlation between the expression of hTRT mRNA and hTRT protein. However, the expression of hTRT mRNA and its protein in GC were not related with other clinicopathological parameters including gender, age, location and size of neoplasm, wall invasion, lymph node metastasis and clinical stage.

结果：1。在53例GC中hTRTmRNA及hTRT蛋白表达均显著高于癌旁组织，hTRT蛋白表达在粘液癌与高分化腺癌和低分化腺癌间表达有显著性差异，hTRTmRNA与hTRT蛋白的表达呈显著正相关，而hTRTmRNA、hTRT蛋白的表达与各临床病理参数包括性别、年龄、肿瘤大小、部位、淋巴结转移、浸润深度及临床分期均无相关性； 2。

A portion of ductal cells and individual serous acinic cells of the minor salivary gland also expressed Fas not only in membranous but also in cytoplasmic pattern.

结果发现，在正常鼻咽粘膜表面及隐窝的假复层纤毛柱状上皮细胞胞膜、部分小涎腺的导管上皮和个别浆液性腺泡上皮细胞的胞膜和胞浆Fas阳性表达；鳞状化生上皮的表层细胞胞膜有Fas表达，但基底细胞未见Fas表达；浸润的淋巴细胞也不表达Fas.45.9%（17/37）的鼻咽非角化性癌Fas阳性，但只有不足10%的癌细胞胞膜微弱表达Fas。

The percent of atresic follicular increase with dosage rising (P.05).The result of expression of Bax and Bcl-2 showed that the Bax expressed widely in every groups, and it enhanced with dosage, there is extreme significant difference between experiment group and control group (P.01),there is not difference between withdrawal 48 hours and 96 hours.

免疫组化法检测Bax和Bcl-2蛋白表达，结果Bax在各组普遍表达，并随镉剂量的加大而表达增强，实验组与对照组间差异极显著(P.01)，48h与96h两时间段间无差异；Bcl-2则普遍表达较弱或不表达，各组间无显著性差异。

The DNA of Yak PrP expressed plasmid extracted from the recombinant expressed bacterium was identified by PCR amplification and two-ezyme digestion. The expressed product was obtained from the recombinant bacterium inducted under the optimized expressed condition (37℃, 1 mmol/L IPTG, 6 h), and it was determined by SDS-PAGE and Western blotting. The GST-BoPrP(23—242) fusion proteins were collected by two ways: the first is to purify and renature from the inclusion bodies; the second is to separate by SDS-PAGE.

将保存的含有牦牛PrP基因重组表达菌提取质粒DNA，进行PCR扩增和双酶切鉴定，并在优化诱导表达条件(37℃，1mmol/L IPTG，6h)下，获得的表达产物进行SDS-PAGE和Western blotting检测；将鉴定之后的重组表达菌诱导表达后，通过两种方法回收GST-BoPrP(23～242)融合蛋白：其一，是从包涵体中提取和复性GST-BoPrP(23～242)融合蛋白；其二，是通过SDS-PAGE直接分离并纯化GST-BoPrP(23～242)融合蛋白。

Ethods Tissue specimens were stained immunohistochemically for MMP-2 and MMP-9 in 30 cases of squamous cell cervical carcinoma,29 cases of cervical intraepithelial neoplasia and 16 cases of normal cervices.

MP- 2鳞癌组与CIN组及正常组相比差异有极显著性(P 。0 1)。 MMP- 9正常组与鳞癌组及 CIN组相比差异有显著性(P 。0 5 )。MMP- 2在各组间质的基质细胞中表达均为阳性。MMP- 9在正常宫颈组织、CIN及鳞癌的基质细胞中阳性表达分别为 0 / 16 (0 %)；4/ 2 9(13.8%)；7/ 30 (2 3.3%)。各组间相比差异无显著性。

The results showed that (1) COX-2 mRNA and protein existed in the mature male rat testis. COX-2 was localized in spermatocytes by immunohistochemistry.(2) COX-2 also existed in adult man testis. COX-2 protein was positively stained in spermatocytes and Leydig cells.(3) 2 weeks after administration of rofecoxib, the level of testosterone in the whole testis reached its lower values, being only 50% of control values. However, testosterone level recovered during 4 weeks. After such treatment, histologic examination of these testes showed atrophy of the seminiferous tubules and maturation arrest of spermatogenesis.(4) 2 weeks post-EDS, expression of COX-2 decreased significantly (P.005), in comparison with vehicle-treatment control. 4 weeks after treatment, a new generation of fetal like Leydig cells repopulated in the testicular interstitium resulting in COX-2 expression partially recovered. Although the expression of COX-2 mRNA and protein are enhanced at 8th week after using external testosterone, it wasn't significant higher than control group.

实验研究证明：(1)正常成年雄性大鼠睾丸组织中COX-2在mRNA和蛋白质水平均存在表达，免疫组织化学结果显示COX-2定位于曲细精管内的生精细胞；正常成年男性睾丸组织中同样存在COX-2表达，免疫组织化学结果显示COX-2定位于曲细精管内的生精细胞和Leydig细胞；(2)服用特异性COX-2酶抑制剂rofecoxib 2周后，实验组大鼠睾丸组织内睾酮的含量减少，为正常对照组的50％；持续用药4周后睾丸组织内睾酮浓度逐渐恢复至正常水平；COX-2酶活性降低后病理组织切片显示睾丸内曲细精管萎缩，生精紊乱，持续用药4周时影响最明显；(3)注射特异性Leydig细胞杀灭剂EDS 2周后，实验组大鼠睾丸组织内睾酮浓度降至极低水平时，COX-2的蛋白和基因表达水平也显著低于正常空白对照组（P.005）；使用EDS后第4周，睾丸组织中的睾酮浓度逐渐回升，同样组织中COX-2蛋白表达和mRNA表达水平也相应提高接近正常水平；使用EDS后4周开始给予外源性睾酮，6周和8周时COX-2表达水平的绝对值虽有提高，但与正常大鼠空白对照组比较并无显著性差异，说明外源性雄激素刺激睾丸合成COX-2的作用并不明显。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。