Nine percent of all people with active tb in the united states tested positive for human immunodeficiency virus infection in 2005 该中心的报告还说到： 2005年的一次检测表明美国9 %的肺结核发病者在人类免疫缺陷病毒检测中结果为阳性。
34 field samples , which were collected from different places of guangxi during 1993 to 2003 , were detected by using developed primary rt - pcr and nested - pcr 结果基础rt - pcr方法检测到其中11份病料为阳性， nested - pcr则检测到23份阳性。
In y2h , rapgap from c . elegans was used as bait to screen c . elegans cdna library . after - lth screen , 63 colonies were checked 在酵母双杂交系统中，将ppc97 rpg ”与ppc86七dna文库共转化入酵母菌y190细胞，经过一lth筛选后，有63个菌落拟为阳性菌落。
When inoculated into 11 - day - old meat - type chick embryos , alv - j imc10200 and sdc2000 strain induced typical ml occurring after 42 weeks post - hatching 将分离毒株回归感染肉鸡， 21周龄时特异性引物pcr抽查检测，抽查感染鸡全部为阳性； 42周龄后出现典型ml病例。
Results of pcr and southern blot analysis showed that the foreign rs gene has been integrated into the tobacco genome in all the transformants 经pcr和southern杂交分析检测表明所获的转基因烟草全部为阳性植株，说明resveratrolsynthase基因已整合到烟草基因组中。
If the stress test is positive ( abnormal ) , then a procedure called catheterization is used to get a better look inside the arteries and determine the best treatment approach 如果结果为阳性（异常） ，就要利用导管插入术更好的观察动脉内部，以确定最好的治疗方法。
Moreover , extracting and purification of phas directly from 32 positive transformants by chloroform - hypochloric acid showed that 25 transformants obtained the product 用氯仿-次氯酸钠对32株pcr - southern检测为阳性的转化植株中进行phas抽提，有25株中得到目的产物。
Hybridization bands were detected by southern blot analysis using lea3 gene probe labeled by digoxigenin the result showed that foreign lea3 gene integrated into strawberry genome 2 。对点杂交为阳性的植株进行southernblot分析，转化植株检测到了杂交带，除预期的1
None of the infants who tested positive for influenza received empiric antibiotic treatment , the researchers note , compared with 38 . 5 % of infants who tested negative 研究者指出，与那些38 . 5 %的检查结果为阴性的婴儿相比，没有一个检查结果为阳性的婴儿需要惯用的抗生素治疗。
Further we cloned full - length cdna of the ked like protein coding region via pcr amplification and confirmed its interaction with acam2 in yeast two - hybrid system 进一步通过rt . pcr克隆了ked样蛋白编码区全长cdna ，通过双杂交验证了全长ked样蛋白与acamz的相互作用，结果为阳性。
