血清阴性

Glanders: a Complement Fixation test with a negative result at a serum dilution of 1:5 or mallein test with negative result

iv。 马鼻疽：血清作1：5稀释，采用补体结合试验或马莱茵试验进行检测，结果为阴性

Mycology, which was positie at baseline in 21 of 23 patients, was negatie in 18 of 19 patients at the end of follow-up; serologic test results were also negatie in 6 of 19 ealuable patients, all of whom had CNPA.

开始接受治疗时，24例患者中有23例真菌学阳性，在后续治疗期结束时，19例患者中有18例转阴；在19例可评估的患者中，有6例CNPA患者血清学检测结果阴性。

The result of specificity showed that different serotypes of strains were all positive for stx2 gene,while nonpathogenic E.coli ATCC23716 was negative.

特异度的测定结果表明不同血清型的大肠埃希菌均为stx2阳性，而非致病性大肠埃希菌ATCC23716则为阴性。

We detected the PERV DNA and RNA by PCR and RT-PCR.

检测混合型人工肝支持系统术前病人的血清均呈阴性。

Porcine parvovirus and pseudorabies virus are the main causes of infectious reproductive failure in swine.

猪细小病毒和伪狂犬病毒均是引起母猪繁殖障碍的主要病原，猪细小病毒的危害主要表现为，导致初产母猪或血清学阴性的经产母猪发生繁殖障碍，其它年。。。

The sensitivity and specificity of catalase was 25% and 100%, and of HAP2 was 90.6% and 60%. The results showed that the antigenicity of HAP2 is sensitive in detecting false negative sera group and may be applied to serodiagnosis in combination with other immunodominant antigens.

其中catalase的灵敏度和准确度为25％和100％，而HAP2则为90.6％及60％，显示HAP2具有较佳的抗原性，并对伪阴性血清样本有很高的灵敏度，未来可与其他高抗原性蛋白组合应用於幽门螺旋杆菌感染的检测。

Methods 183 patients with seronegative viral hepatitis in serum were selected.

目的了解肝炎病毒血清学标志阴性的肝病存在情况，探讨其病因。

The SMMC-7721 hepatoma cell line of experimental groups and control groups were cultured with the addition of sodium selenite, potassium iodide or triiodothyronine (T3). The cell quantity was checked by the MTT assay , and the cell cycle was observed by flow cytometry and levels of AFP and ALB in the culture solution were determined by RIA.The SD rats were divided into positive control group, negative control group, T3 group and mixture group (the mixture of sodium selenite, KI and T3). After two weeks of the administration of sodium selenite、 KI and T3,Walker256 cells were transplanted into the abdominal cavity. The administration was kept on for another two weeks, then observed the morbility and mortality of the rats with ascites carcinoma. At the end, the ascites were for the cells counting and the cell cycles analysising.

方 法：在体外，应用细胞培养的方法，培养SMMC－7721肝癌细胞系，分为试验组和对照组，试验组加入不同浓度Se、I或T3干预，培养一段时间后，通过噻唑蓝试验、流式细胞仪，观察细胞数量及细胞周期的变化，测定细胞培养上清液中甲胎蛋白、白蛋白的水平，观察细胞分化情况；在体内，将试验用SD大鼠分成阴性对照组、阳性对照组、T3组和混合组（为Se、I和T3混合物），首先预防性用药2周，然后给试验组大鼠和阳性对照组大鼠腹腔注射Walker256细胞，制造腹水癌大鼠模型；继续用药2周，观察各组大鼠发病率及死亡率，测量不同时期大鼠血清FT3含量，通过流式细胞仪测量大鼠腹水细胞数及细胞周期变化。

We assessed the presence of HBV DNA in serum samples from 36 patients HBsAg-negative hepatitis B by spot hybridization test with cloned HBV DNA probe.

应用斑点杂交方法对36例HBsAg阴性的各种类型的乙型肝炎患者进行了血清HBV-DNA的检测，33例获得阳性结果。

Sera from patients with other parasitic diseases and healthy individuals were used as control. RESULTS: The anti Trichinella antibodies were detected in 15 infected mice as early as 2 weeks after infection,and in 86 5% of 467 patients with trichinosis.

结果：15只小鼠感染旋毛虫后2wk即可检出抗体，467例旋毛虫病患者的抗体阳性率为86.5％，而丝虫病、包虫病患者各45例和健康人血清56份均为阴性。48份并殖吸虫病患者的交叉反应率为16.67％。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。