阴性

The result shows that 4.1-6.5 kDa antibacterial substances separated from the crude extract described above could efficiently kill Gram-positive bacteria (Staphylococcus aureus, Bacillus subtilis and Micrococcus luteus), but no any activity for Gram--negative bacteria or fungi.

可产生出分子量在4.1-6.5KD之间的抗菌物质，这些抗菌物质对革兰氏阳性菌(金黄色葡萄球菌、藤黄微球菌及枯草芽孢杆菌)有广泛的抗性，而对革兰氏阴性菌和真菌没有抗性。

This study was to explore the value of tumor tissue microdissection and combinational detection of IgH and immunoglobulin light chain in diagnosis of non-Hodgkin's lymphoma.

缺点是假阴性率较高，在石蜡包埋组织中尤为明显。

The test results of micronucleus and chromosome aberration in mice were all negative.

小鼠骨髓多染红细胞微核试验和小鼠睾丸精母细胞染色体畸变试验均为阴性。

The pathogenic bacteria of AV was primarily Gram-positive aerobic bacteria,with the detection rate of 80% including Staphylococci aueas,Enterococcus faecalis and E.coli;low rate of B.streptococcic was detected.The pathogenic bacteria of BV was primarily Gram-negative anaerobic bacteria,while the rate of Gardnerella was detected as less than 40%.There were 8 cases with of AV concurrent infection in 48 cases of BV infection,and 6 cases with BV concurrent infection in 31 cases of AV infection.Conclusion Microphyte profile analysis indicated that patients infected by AV were susceptible to anaerobic bacteria such as Gard...

正常女性阴道中以乳酸杆菌为主，产H2O2乳酸杆菌的检出率89%，AV的致病菌主要是革兰阳性率需氧菌、检出率可达80%，其中金黄色葡萄球菌，粪肠球菌和埃希氏大肠菌较为常见，B族链球菌的检出率较低；BV的致病菌主要是厌氧菌，以革兰阴性厌氧菌的检出率最高，加德纳菌的检出率不足40%。48例BV患者中有8例合并AV感染，31例AV患者中有6例合并BV感染。

The results showed that the virus isolation and identification could generate considerably reliable results but the procedure was complicated and costed long time; microtomy fluorescent antibody detection was fast, but the specificity was low and needed to exclude the false positive from the results. Sandwich ELISA detection combined the merits of the former two methods, but it generated the false negative results when the samples were in bad preservation. Compared with the others, RT-PCR was fast, high sensitive and especially useful for detecting the CSFV directly from the samples. The specificity could be raised by using the nested-PCR to detect the CSFV from the simples, especially when the simples were in bad preservation.

结果显示，病毒分离鉴定法准确性较高，诊断比较容易，但存在试验步骤繁琐，所需时间长的缺点；荧光抗体检测法所需时间较短，但需要经验比较丰富人员来判定结果，且存在假阳性结果，特异性比较差；RT-PCR检测法具有快速、敏感等优点，特别是样品保存不理想时更有价值，利用套式PCR可以提高检测的特异性；夹心ELISA检测法具有快速、敏感等优点，但在样品保存不理想时会出现假阴性结果。

Chest imaging was consistent with miliary tuberculosis; however initial expectorated sputum was culture negative.

胸片表现为粟粒性结核；但晨痰培养是阴性的。

The reagents for a standard skin test should include penicilloyl determinant, penicillin G, other minor determinant mixture, positive control agent, and negative control agent. Skin test should be done by prick method first and then by intradermal injection method if the results of prick test are negative.

标准盘尼西林皮肤试验需准备五种试剂［penicilloyl determinant、盘尼西林、及其他的minor determinant mixture、阳性对照试剂、及阴性对照试剂］，依次以针刺及皮肤内之方式进行试验。

Results The positive results were found in all strains of streptococcus gordonii and 66.7% of streptococcus mitis.

结果 所有高登氏链球菌和 66 7%的缓症链球菌与α淀粉酶结合能力为阳性，而血链球菌与口腔链球菌与α唾液淀粉酶结合均为阴性。

Milk loss in multipara due to gram-negative CM was approximately 304 kg (228 kg) in the 50 d following CM.

牛奶损失产妇由于革兰氏阴性中医大约三百零四千克（ 228公斤）在50 d以下厘米。

Methods The recombinant sequence for two CEA epitopes was tandemly engaged and inserted into-upstream of in-frame-varied HSP70 of Mycobacterium tuberculosis to construct a gene vaccine.Balb/c mice were muscularly injected with recombinant DNA vaccine;negative control (mice were injected with normal saline), positive control (mice were injected with DNA vaccine harboring tandem CEA epitopes plus aluminium hydroxide adjuvant) and experimental group(mice were injected with PCITri CEA625-667-met HSP70) were set up.

在已经构建含有变异热休克蛋白序列的基础上，插入重组CEA串联表位的编码片段获得CEA串联表位-HSP融合基因疫苗。3次肌肉注射免疫Balb/c小鼠，设立注射生理盐水的阴性对照组、注射氢氧化铝佐剂混悬CEA串联表位的阳性对照组及注射pCITriCEA625-667-mtHSP70的实验组。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。