查询词典 positive

Results: 1. The expression positive rates of HER-2/neu in 49 cases of ovarian carcinomas was 75. 5%. The response rate to chemotherapy of patients with positive stainings was 24. 3% and lower than that of patients with negtive stainings (75. 0%) obviously, P....

此外，近年来人们已注意到：癌基因和抑癌基因不仅影响肿瘤的发生发展，而且也影响肿瘤对化疗药物的敏感性，而卵巢癌的耐药又往往是其化疗成败的

Immunohistochemical stainings for CK7 and CEA in 6 cases with VP showed strong positive, whereas for 34βE12 and HMB45 in all 6 cases were negative, and for C-erbB2 in 2 cases were positive.

上皮内VP切缘阳性4例，复发2例；切缘阴性4例均无复发。6例CK7、CEA呈强阳性，34βE12、HMB45阴性，2例C-erbB2阳性。

objective the aim of this study is to investigate the expression and the distribution of the nerve growth factor during the period of neural tube development of human embryo.method early development of neural tube was studied in human embryos about 35 gestational days by using immunocytochemical abc technique.result there were ngf immuno-positive substances in the cytoplasm and nuclei of neuroepithelial cells in the ventricular zones of neural tube.in the intermediate zone of neural tube,ngf immunoreactivity was detected in the nuclei of some neurons,or the processes of other neurons which contained no ngf-immunoreactive substances in their nuclei;the expression pattern of ngf in the marginal zone of neural tube was similar to that of the intermediate zone.the density of ngf-immunorecative particles was higher on the rostrum side of neural tube than on the caudal side.the ngf immuno-positive cells were also observed among the somites of embryo under the neural tube.conclusion these results suggest that ngf was an important signal molecule to induce neural tube differentiation,and that ngf may play a significant role in regulation of the biological function of neurons in developing neural tube.

目的 研究捷安肽素的抗真菌作用机理。方法采用形态学方法和同位素标记法。显微形态观察经捷安肽素处理后的供试真菌的形态学变化。进一步采用14c同位素标记的特异底物&尿苷二磷酸-（14c）-葡萄糖&示踪，研究捷安肽素对真菌(1，3)-β-d-葡聚糖合成酶活性反应的影响。结果研究神经生长因子在早期人胚神经管发育过程中的定位表达。方法采用免疫细胞化学 abc法染色，研究35天人胚的发育情况。结果在人胚神经管的室管带中，神经元的细胞质和细胞核ngf免疫反应阳性；在中间带，一部分神经元的细胞核ngf免疫反应阳性，另外一部分神经元的细胞核ngf免疫反应阴性，而其突起ngf免疫反应阳性；在边缘带ngf的表达与中间带相似。在神经管的头侧ngf阳性反应较强，神经管的尾侧ngf阳性反应较弱。结论 ngf在人胚神经管免疫反应阳性，表明ngf可能是诱导神经管分化发育的重要信号分子，提示ngf可能在人胚神经管的发育中具有十分重要的作用。神经生长因子；人胚；神经管；发育

One pair of primers that amplified the gB gene of pseudorabies viruswas designed and synthesized.PCR technique detecting the DNA of PRV was established after selecting the best reaction conditions.This technique was applied to specifically amplify the 281 bp DNA fragment of the PRV strains including Fa,Fb,Bartha,BJ,GD,V2F4,S,S3,SR,Buk,Shope,Norden,Mink Ⅲ,HB,F8,F9 and F12 in cultured samples.The negative results were achieved from Vero cells,swine vesicular disease virus,hog cholera virus,Japanese encephalitis virus,porcine reproductive and respiratory syndrome virus,porcine parvovirus,foot and mouth disease virus F29 strain,O3I3 strain,T509 strain and O Ⅱ MF249 strain.The results of sequencing showed that the PCR method was of specificity.The sensitivity of PCR reached 15.8 pg of PRV Fa strain DNA.The tissue samples obtained during 1994 and 2000 were detected,and the results showed that the sensitivity of PCR was more sensitive than virus isolation and the Sandwich ELISA.The PCR was applied to detect 191 tissue samples from 31 pig farms obtained from Guangdong,Fujian,Hainan Provinces during 1999 and 2000,50 samples(26.2%)were positive and 22 pig farms(71%)were positive.

根据伪狂犬病病毒gB基因的序列，设计并合成了一对引物，以闽A株细胞培养毒为模板，筛选最佳反应条件，建立了检测PRV的PCR方法应用该方法对Fb、Bartha、BJ、GD、V2F4、S、S3、SR、Buk、Shope、Norden、MinkⅢ、HB、F8、F9、F12等毒株的细胞培养液进行基因扩增，均获得了分子量为 2 81bp的特异性目的DNA片段，而对Vero细胞与FMDV、SVDV、HCV、PRRSV、JEV、PPV等病毒进行检测，结果均为阴性，没有出现交叉反应对PRV毒株扩增的产物测序，结果序列与文献报道一致，证明PCR扩增产物和方法的特异性对 1994～ 2 0 0 0年期间送检的临床样品和保存的PRV毒种，用病毒分离、双抗体夹心ELISA和PCR等 3种方法进行检测，结果前 2种方法检测为阳性的，PCR检测均为阳性；PCR检测为阴性，前 2种方法检测也为阴性；可是，前 2种方法检测为阴性的，PCR却检测出部分阳性；经x2 检验，证明PCR检出率明显高于前 2种方法的检出率对PRV闽A株细胞毒提取物DNA进行检测，其最低检出量为 15 8pg 对 1999～ 2 0 0 0年期间广东、福建、海南等省的 31个大中型猪场送检的 191份病料进行检测。

11 guinea pigs which were successfully induced myopias were extracted eyeballs, and the scleras near posterior poles were observed by immunohistochemistry methods. The positive rates of TGF-β〓 and bFGF in scleral fibroblast cytoplasma and the area percentageratio of positive cells were calculated and contrasted to controlled eyes.

将透镜诱导近视成功的11只豚鼠处死，摘除眼球，取后极部巩膜分别进行TGF-β〓和bFGF的免疫组织化学染色，观察它们在巩膜组织成纤维细胞胞浆中中表达的阳性率和阳性细胞所占面积的百分比，并与对照眼进行比较。

11 guinea pigs which were successfully induced myopias were extracted eyeballs, and the scleras near posterior poles were observed by immunohistochemistry methods. The positive rates of MMP-2 and TIMP-2 in scleral fibroblast cytoplasma and the area percentageratio of positive cells were calculated and contrasted to controlled eyes.

将透镜诱导近视成功的11只豚鼠处死，摘除眼球，取后极部巩膜分别进行MMP-2和TIMP-2的免疫组织化学染色，观察它们在巩膜组织成纤维细胞胞浆中表达的阳性率和阳性细胞所占面积的百分比，并与对照眼进行比较。

This paper also gives fuzzy Candidate-elimination algorithm to extract rales using both positive and negative instances. In the concept space constructed by features, we find a good description that can cover positive instances and exclude negative instances.

提出了用正样本和反样本提取模糊规则的模糊候选删除算法，在由属性构成的概念空间中，找到一个能够覆盖所有正样本和排除所有反样本的最佳概念描述。

ChiLi takes a full positive view of secular life which is full of material desire and people's positive persuit of secular happy life. Her works give us a show of the upstarts who live as if drunk or dreaming which is satisfied those plebeians'desire of knowing the gorgeous life and the psychology of seeking novelty and strving for ornate diction.

池莉充分肯定了我们这个充满物欲的时代的世俗生活，以及人物对于世俗幸福生活的积极追求，为我们展示了当今都市新贵们醉生梦死的生活，满足了小市民对富丽堂皇生活的画饼充饥的渴望及猎奇猎艳的心理。

METHODS: 39 full-term placentae of HBsAg sero-positive and 4 full-term placentae of HBsAg sero-positive pregnant women were enrolled.

收集血清学HBsAg阳性孕妇足月胎盘组织39例，阴性4例，用SABC免疫组化法检测HBsAg、FcγRIII。

7Th, the linkage part including the fire extinguishing pump, sprays the pump, to discharge fume the air blower, the positive pressure air blower, the lift control, the roll-up door control, the non-fire prevention to cut the power source, the positive pressure supply-air outlet, to discharge fume electrically operated the mouth, the acousto-optic warning, 280 degrees fire resisting dampers, the gas fire fighting, the fire-alarm urgent broadcast and so on.

联动部分包括消防泵、喷淋泵、排烟风机、正压风机、电梯控制、卷帘门控制、非消防强切电源、正压送风口、电动排烟口、声光警报、280度防火阀、气体灭火、火警紧急广播等。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。